Rito does a favor! Funny and confusing situations!

When you returned home that day, you were tired since you'd been hanging out with some friends, so when you arrived, Lala was already home, along with Momo and Nana. Upon seeing them, you were confused, seeing their worried faces, and also noticing that Mikan wasn't with them.

You approached and looked at them in confusion. "What's wrong, Lala, Momo, Nana?" you asked curiously.

They looked at you seriously, and it was Lala who spoke up; she looked very worried. "Rito! You should come here, it's Mikan!" she said seriously, taking your hand and leading you to your sister's room.

When you get there, you look worriedly at Mikan, covered in bed with a cloth on her forehead. You also notice that she's coughing and is being watched by Yami and Celine. The three of them turn to look at you when you enter and approach, worried. "Mikan! What happened? Are you okay?" you ask, reaching her and looking at her worriedly.

She tries to sit up, but Yumi doesn't let her, and while she coughs, she looks at you, with a sad face. "I'm fine, bro! I just caught a slight cold," she says as best she can in a weak voice.

You look at her worriedly, while you put your hand on her forehead, and you see how hot it is. "On the way to class, she started to feel sick, and we brought her back! She should rest, Yuki!" Yumi says in a serious voice.

You nod and look at your sister, who seemed to want to sit down. "They're right, you shouldn't move, and you should rest, Mikan!" you tell her, looking at her seriously.

She coughs, but finally, she seems to give up and lies down, but she looks at you sadly. "But I have to get up! Today is Sachi's birthday, I promised to go!" she says weakly, looking at you imploringly.

You sigh. You've heard for days how excited Mikan was about her good friend Sachi's eighteenth birthday, and also how she had been so excited to prepare a gift for her, but now you see how that was going to be impossible. "Mikan! You can't go, I'm so sorry! Don't you see, how are you? You should give her the gift some other time!" you say, trying to reason with her.

She looks at you sadly, and you see her lower her gaze, dejected. "You're right, but... with all the work Mami and I put into the gift..." she says with disappointment, but suddenly looks up and looks at Lala. "Unless... someone can give it to her like it's me!" she says suddenly with a smile.

Hearing that, your eyes widen and you step back, while six pairs of eyes suddenly stare at you intensely. "Oh no! No way! Don't even think about it!" you say fearfully, even more so when Lala looks at you smiling and takes something out and points it at you. "Stay still, Lala! Don't do that!" you say fearfully.

Lala doesn't hear you and, without hesitation, approaches you. "Come on, Rito! It wouldn't be the first time! It'll only be a few hours! Come on, be good!" she says, while pointing her invention at you and launching a lightning bolt at you.

You can't dodge it, and you let out a scream of fear.

——————-

Two hours later, you sigh once more, while adjusting your clothes, and look back at Lala and Momo. "I still think this is crazy! We should think of something different!" you say nervously, shuddering slightly as you hear your voice, which at the same time, isn't your voice, but Mikan's.

As you looked at yourself once more in the mirror in your room, the reflection it gave back to you became even more nervous. Your reflection showed an exact copy of your sister, with neatly combed brown hair. You were wearing a green blouse with a dark blue miniskirt. You also wore high heels and thigh-high stockings. You were also obviously wearing a set of black underwear, consisting of panties and a lace bra that showed off your size D breasts.

Sighing again, you look at Lala. "Seriously, was it necessary to wear underwear? It would have been helpful to put on a jacket and pants, don't you think?" you say for the umpteenth time, shifting uncomfortably. "And you're sure, how long you're saying that? Because I don't want to go back to my body while I'm dressed like that!" you shudder.

Lala and Momo smile and shake their heads. "Of course, it was necessary, Rito! Didn't you hear Mikan? It must be believable, otherwise Sachi and Mami would find out, and they wouldn't be too happy!" Lala says happily, then smiles playfully at you. "Besides, you look fantastic in those clothes! And I already told you, the effect lasts 24 hours! You don't have to worry!" she says in a cheerful voice, then gives you a warning look. "That's right, remember! No perverted stuff with boys! I don't know how that might affect the effects, got it?!" she finally says, very seriously.

You blush even more and quickly shake your head. "Who do you take me for? I already told you, I have no intention of doing anything weird!" you say firmly, though you then frown. "Besides, did I really need to acquire all my sister's memories and knowledge? Why, I could live without knowing some things!" you say with a mixture of embarrassment and anger, then you look at Momo. "When this is over, Momo, you and I are going to have a conversation about certain activities! Got it?" you say angrily, looking at a suddenly flushed Momo.

Momo nods, while looking at Lala. "It better be worth it, sister! Because I certainly didn't want Rito to know some things, yet!" she says in an annoyed tone, then looks at you and winks. "You can relax, if you want, before you return to your normal form, I can show you how much fun Mikan is having!" she says suggestively.

You open your eyes in surprise and shake your head. "Momo! Don't even think about suggesting that again!" you say, blushing deeply. You're about to add something else when you hear the doorbell ring, and you sigh. "Good! There they are! Mikan will owe me a big favor after this!" she says with a sigh, and grabbing the gift you were supposed to deliver, you head for the door, with a laughing Lala and Momo following behind.

Descending the stairs shortly after, you try to relax as you reach the entrance hall, where a smiling Mami is already waiting for you, along with Yami and Celine. Mami, also elegantly dressed, is carrying a package and looks at you happily as you approach. "Wow, finally! I'm so glad you can finally come, Mikan! We were worried when you didn't come to class!" she says, smiling contentedly.

You smile back, a little nervously, and approach her, trying to appear confident. "I'm sorry I'm late! I wouldn't have missed this day for the world, Mami!" you say cheerfully, giving her a happy look. "Well, we'd better go, wouldn't you?" you say, trying to sound impatient with excitement.

Mami nods and smiles at you as you say goodbye to Lala, Momo, Yami, and Celine. Taking her hand, you leave your house.

——————-

As you walk towards Sachi's house, you chat happily and laugh excitedly, waiting for Sachi's reaction to your gifts and the surprise you'd prepared. At first, you were nervous because, until that day, your interaction with Mami had been minimal. Although she was a close friend of your sister, she was still younger than you, and you'd never really taken the time to get to know her well.

But now, as you walk with her, you find it very easy to interact with her, thanks to the effects of Lala's invention, which makes it automatic how you should treat her and how to speak to her. You have to admit, she's a charming girl, and very cheerful, and the conversation is becoming quite enjoyable.

When you arrive at Sachi's house, you ring the doorbell, eagerly waiting for an answer. When the door opens, Sachi appears with a wide smile. She wraps you in a hug and invites you inside, while you and Mami laugh together.

-----A couple of hours later----

Before you know it, you, Mami, and Sachi are laughing and enjoying the party with a group of about half a dozen other girls, all friends of Mikan and Mami and Sachi, and a few others you didn't know.

You were having a great time and were very happy because the gift you had brought her and the surprise you had given her had made her very happy, which had pleased you and Mami greatly.

At that moment, you were talking to Ayumi and Hitomi, two of Mikan's classmates and also good friends of hers, and you knew they were quite perverted, so it didn't surprise you when they started getting affectionate with you after having some punch.

You, who had never tolerated **** very well, and although you resisted the temptation for a while, in the end, you, Mami, Sachi, along with Ayumi and Hitomi, all ended up a little tipsy. And finally, when you realized it, you were kissing Ayumi and Hitomi while they slowly took off your clothes.

Because of the effects of the ****, you don't know when you ended up in the guest room with Ayumi, Hitomi, and Mami. What you do know is that when you came to, Hitomi had her face buried between your legs, licking your pussy, making you shudder and come like never before.

But what was a surprise, at least to you, was when, after being naked except for their stockings, Ayumi and Hiotomi undressed in front of you. You were stunned to see that between their legs were two very large, thick cocks, both about nine inches long.

You were very surprised, but Mami didn't seem to be, because she quickly threw herself onto Ayumi's cock and started giving her a blowjob. Carried away by your state, and although you hesitated at first, you also threw yourself onto Hiotomi's cock.

After that, you experienced your first time being fucked by a cock as a woman, and you ended up being thoroughly fucked and covered in semen. The only thing that puzzled you was when, after Hitomi filled your ass with semen, it seemed that the effect of Lala's invention had partially faded, because, unbelievably, a cock and balls grew where your sister's private parts had been. What also puzzled you was seeing the same thing happen to Mami, but she didn't seem bothered or surprised.

Driven by lust, you ended up fucking Mami, Ayumi, and Hitomi, and being fucked by Mami as well.

When you finally got dressed and left the room, you returned to the living room laughing, where Sachi and two other girls were still waiting. They laughed when they saw you and joked around. When you finally said goodbye to Sachi and Mami and headed home, you were glad you had gone to the party.

When you arrived home, it was quite late, and it was completely quiet. You went to the downstairs bathroom and washed off any traces of semen you might have had on you. While trying to find your way back to your room, you didn't have much luck. You only managed to get inside when you saw a girl with pink hair come out of a door and look at you in surprise.

You, who could barely make anything out in the near darkness, approached the girl, thinking she was Lala, and hugged her, laughing. After that, everything is a blur, and all you remember is falling onto a bed while you and your companion laughed.

—————-

The next morning, you're woken by hands shaking you and someone speaking to you. "Good heavens, Rito! That was quite a party last night, wasn't it?!" says Lala's voice. "Well, next time, let's see if you choose the right room!" you hear her say with amusement.

You open your eyes with effort, as you have a splitting headache, and sit up, looking around, swallowing hard. You see Lala nearby, smiling at you. Next to her is Nana, looking a bit more serious, but she's also clearly amused.

You swallowed hard when you realized where you were. You weren't in your room, nor Lala's, nor Nana's. You saw the green walls and the spacious bed. You also spotted a familiar table and a computer. You were in Momo's room! To confirm, you turned to your side and saw Momo looking at you, already awake, with a slight blush and a smile. "Momo, what?!" you said nervously, noticing that you still looked exactly like Mikan. "What am I doing in your room? What happened?" you asked, confused.

Momo laughed when she heard you and winked. "What are you doing here, Rito? It's pretty obvious! Yesterday, when you got back, if it hadn't been for me, you would have fallen asleep in the hallway! Besides, seeing how you came back, it's no wonder you don't remember!" She says playfully, then gives you a mischievous look. "That's right! You were quite affectionate yesterday, huh? We should do it again!" she says slyly, then looks at Lala and Nana. "Next time, you have to join in! You should have seen how playful he got, haha! The device definitely worked perfectly!" she says finally, looking at Lala.

You blush deeply and lower your gaze, while you hear Lala and Nana laughing too, as Momo gets out of bed and stretches. You can see that she's naked except for her panties, and you look at her shyly. "I'm sorry, Momo! I didn't mean to!" you say sincerely, though you then look at her somewhat annoyed. "You could have taken me to my room, couldn't you?" you ask, while frowning.

She gives you a teasing look and winks. "And miss out on that fun?! No way!" she says playfully, then looks at you and her sisters and becomes serious. "Well, if you've stopped having fun, I should get dressed! I have to go out, or I'll be late!" she says as she makes you get up and takes you, Lala, and Nana out of her room, giving you only enough time to grab the blouse that was on the floor.

—————-

After that, you went to Mikan's room to check on her, and seeing her sitting on the bed, talking to Yami, and seeming much better, she smiled when she saw you. "I see things went well yesterday, huh, Brother?! And by the way, Sachi called earlier, you know?!" she says with a big smile. "She thanked me again for everything and asked if I was recovered! From what I can see, everything went very well!" she says, very pleased.

You approach her, smile back, and nod. "I'm glad you're happy, Mikan! And yes, everything went perfectly! The only thing is, I assure you, this is the last time I drink ****! My head feels like it's going to explode!" you say, trying to joke, then give her a scrutinizing look. "And I see you're better, huh? I'm glad! Because I wonder when the effects of that darn thing will wear off!" you say seriously.

Yami and Mikan exchange glances, and Mikan laughs and gives you a playful look. "Come on, brother! Don't complain. From what Sachi said, you had a great time yesterday, huh?!" she says playfully, then looks at you seriously. "It's a shame, really! I was so excited to have a twin, haha!" she says with a soft laugh.

You blush and shake your head as you turn around. "Don't joke around! I only did it to do you that favor! Well, I'm going to see if I can take this off. I'll leave your clothes in the laundry basket while you rest!" you say finally, as you leave the room.

You go to your room, eager to change. When you get there, you go in, close the door, and go to the bed, where you slowly take off your clothes, finally pulling down your panties and sighing. There, between your legs, was your penis peeking out. Although you frown, was it just you, or did it look bigger and thicker? Dismissing the idea, you take off all your clothes and get ready to put them on.

You're still facing away when the door opens, and a cheerful Lala enters, walking towards you with a smile. "Listen, Rito! Risa's downstairs with Mio! Why don't you come along and we'll go for a walk, huh?!" she says happily, approaching you as you turn around.

You look at her and smile gratefully, but shake your head. "I think I pushed my luck a bit last night, Lala! I think it'd be better if you went! That way we can... uhh? What's wrong? Why do you have that look on your face?" you ask, puzzled, when you see her staring at your penis in surprise and blushing. "Please, Lala! Don't look at me like that, okay? You should be grateful that the effect of your invention didn't give me away yesterday! Because, as you can see, my *little friend* reappeared!" You blush slightly and try to cover yourself.

She recovers from the shock and looks at you, puzzled. "What do you mean?! It was just your dick that came back, nothing else?" she says, bewildered, as she places one of her hands on your penis and begins to stroke it.

You shudder and moan softly, trying to push her hand away. "Exactly, Lala! Suddenly yesterday, my penis reappeared! At least no one suspected a thing! But what a scare!" you say sheepishly, but you see Lala looking at you intently, seemingly very surprised. "What's wrong, Lala? It only partially worked, it could have been worse!" you say dismissively.

She looks at you and takes hold of your penis again, gently shaking it. "It's very strange, Rito! This shouldn't have happened! The effect either lasts for twenty-four hours or it reverses completely! It's not normal that only your penis came back!" she says seriously, while stroking your penis. "Besides, I swear, your penis is bigger now! When you return to your original form, I'm going to investigate what happened! And I'll need you to tell me everything that happened at that party yesterday! Because with Momo, I can imagine!" She finishes by saying, and finally removes her hand from your cock, turns around, and leaves your room, but before she does, she turns back. "Oh, and if you want, I'll leave you some clothes until you change again!" she says, leaving what looked like some clothes on the chair that was there, before finally leaving.

You, still with a hard-on and feeling really turned on, sigh and get ready to get dressed. You go to where Lala left the clothes and look at what she left you, seeing with relief that it was a set of black panties and a bra, along with some shorts and a blue blouse. With no other option, you take the clothes and put them on.

----A while later, in the dining room----

Half an hour later, you were going downstairs, already dressed, thinking about getting something to eat. You were hungry, since you hadn't had breakfast. When you got downstairs and headed towards the kitchen, you heard someone there and imagined it was Nana or Yami, so you went straight to the refrigerator to see if you could find something to eat.

You didn't see someone in the dining room as you passed by. They gave you a serious look as you went to the refrigerator, opened it, and looked inside. You saw some things that might be good for a snack, and you were about to grab them when suddenly you felt someone behind you. They put their hands on the front of your blouse and started caressing your breasts. "Well, well! You naughty girl! What are you doing up? Lala told us you were in bed! Besides, dressed like that, you make me want to caress you!" Risa's voice whispers in your ear.

You shudder and moan as her hands massage your breasts. "Risa, stop, please! You can't do that, mmmhhh," you try to say between sighs, but she continues, and suddenly she pinches your nipples, making you let out a loud moan of pleasure and close your eyes.

Risa laughs and continues playing with your breasts until she finally turns you around. "Although it's a lot of fun, I have to leave it for another time, Mikan! Lala and Mio must be waiting for me! If you want, we can continue this later!" she says suggestively, smiling as you nod. "Perfect! Well, I'll see you when we get back!" she says cheerfully, turning away from you and waving goodbye.

You stay put, still trying to recover, and finally sigh with relief, and get ready to grab something to eat.

—————-

After eating something and relaxing, watching television, taking advantage of the fact that it was Saturday, you were already looking forward to the time when the effect of Lala's invention would end, and you would return to your original form.

What was making you nervous was noticing how, as the time drew closer, you were becoming more and more aroused, and you could feel how hard your cock was, and also how hard your nipples were. All the while, you tried to relax and ignore those sensations.

When there were only a couple of minutes left until the hour arrived, you were already very impatient and started counting down in your head. As the countdown ended, you began to feel an intense tingling sensation throughout your body, which spread and intensified. You closed your eyes and gasped, noticing this. It lasted for a few seconds, which felt like an eternity, until finally, as quickly as it had come, it was gone.

Finally, you opened your eyes and let out a gasp of relief, but just then, you heard a cough from the dining room doorway. You turned toward it and saw Yami and Mikan watching you.

You looked at them, startled, and were about to say something, but you noticed something strange about yourself and looked down.