The other two interrupt

We need to hurry. He thought to himself. If Kinoko was brainwashed by the mushroom, and I was supposed to be, then-

Before he could finish his thoughts, he was wrapped around with green vines. "The mushroom wants you, Midoriya." She emotionlessly said as she pulled him to her. "It wants you to command us. It wants you to be our master. But before that," Izuku then noticed Kinoko get jumped by Yui, "we must all assemble." The mushroom heroine found herself being kissed by the size-altering heroine. While she was initially shocked and trying to fight back, it only took a few seconds for a new mushroom to grow on her head as her arms became lowered to her sides.

"The mushroom's will, we must obey," Kinoko said flatly as the girls turned their attention to Izuku. "However, he will not submit by our means."

So much for an easy solution. Izuku realized he was going to need to get all three girls with those mushrooms at once or wait out the clock for an hour. Leaving them like this for that long and abusing the idea of the exercise were both last resorts for him as the girls pondered how to induct him. Yui tried her hand at Kinoko's kissing method and achieved about as much. The brainwashed Ibara didn't bother, knowing a lost cause when she saw one.

"Perhaps we need a new approach." Ibara removed her vines from Izuku. "He is loyal and will not leave use. All the more for the Mushroom's need for a master."

Need for a master? Izuku thought back to what Kinoko said - that it sees a good master in him? _Wait, does that mean- _Izuku's thoughts crashed and burned when Ibara undid her button shirt and opened up. While she was wearing a bra, Izuku was made fully aware of how big they are. Is... is every girl's bust in this university big? Izuku tried to turn away, only to see Kinoko had done the same and, while not as large, was still eye-catching and gropable. Roughly on par with Tsuyu's. And before he could even think of a plan, he found his hands being placed on Yui's breasts.

"My outfit takes too much effort to remove." She said with a monotone. "Tough or observe as you wish."

Something clicked for him - the perverse nature of everything. Maybe... no, certainly this is the note's doing. And if they just need a master... "The mushroom needs a master, right? Then do as I say!" Ibara and Kinoko walked up to them, and Izuku removed his hands from Yui. "Ibara, fondle your breasts." Without any expression, she did just that as her pink bra struggled to handle the movement. "Okay, uh... continue to do that, but only after buttoning up your shirt."

"Kinoko," he said, "button up as well and massage Yui's chest." None of the girls showed any concern as they followed his exact orders. While he admittedly enjoyed the sight before him, he was also coming to terms with that it meant all three girls both would be okay with the note being used on them, and with joining a harem with him. As unreal as that seemed, it didn't shock him as much as it did with Kendo, Yanagi, and Setsuna. I guess I'm growing numb to the concept?

Izuku walked over to pick up the mushrooms (the trio was too busy following his orders to care) and he placed them on each of their mushrooms to free them. He quickly made some distance between Yui and Kinoko, as he had no intention to fully explain what they were doing. He didn't feel it was needed, and he didn't want them panicking either. As far as the three knew, Kinoko just has Ibara hold Izuku up as they tried and failed to brainwash him.

Izuku used the rest of the time to help them destroy the larger mushroom and plant new ones, giving a sense of closure to the storyline they set up, and giving them something to collect for the remaining time.

"I must admit..." Ibara said with a smile and blush, "the idea of playing a character is quite thrilling." She then looked over at her black-haired friend. "I'm glad you thought of this." Yui blushed but smiled as she picked mushrooms (that Kinoko grew from the rocks, but they were ignoring that). They all put the mushrooms into a basket, which Izuku elected to take down the hill to Kinoko.

At the house, he found her quietly thinking to herself. "Everything okay?"

"Huh? Oh, yeah." She said. "Just thinking about today... I've never been able to make this many mushrooms before. Ever. I'm normally tired by now, but I've been at it all day and not a single issue. And, well, mixing mushrooms together was something that never worked before." She looked up at him with a smile. "I guess my quirk picked a good day to mutate."

Izuku had to put on his best poker face as it struck him that the note was fully capable of altering their quirks. "It picked the best day." He said in disbelief.

"By the way, are the others with you?"

"No, why-" Izuku was interrupted with another kiss from her. This time, though, it was just on the lips, and Kinoko was turning rather red. It didn't last more than a few seconds, though.

"I...I figured... I owed you a... normal one?"

Izuku turned a slight shade of pink, but after a night with Ochako and the rest of today, this was nothing. "It's.. it's fine. And nice." Izuku then place the basket of busywork on the floor and sat next to her. "Say, uh... you want to hang out sometime?"

"What?!"

"Ya... ya know, hang out?" Izuku wasn't doing this for the harem project (even though Kinoko was a fine option in his book), but he just wanted to spend more time with her. "We just sit around. Talk about stuff that interests us? Maybe bring snacks?"

Her jaw was wide open at his proposal. If she wasn't used to people saying she had a cool quirk, then this was beyond her understanding. She kept pointing to the two of them as if to wordless ask "really?" to which he merely nodded with a smile. Once she learned to close her mouth, she nodded with a massive grin. "I'll, uh, give you my number tomorrow at lunch!"

Izuku smiled, liking the idea of that as they left the house to talk with them about how to spend the rest of their time with the exercise.