"To join us".

She is confused at this and seems a bit disgusted. "If that disgusts you already, then do know I took her virginity and bred her as well. During all of this, **** is irrelevant to the cause. And as far as I can tell, it will also happen here anyway. Don't judge me for this when I am not even from the same universe.", You sense her arousal to you speaking to her like this, almost like a 6th sense. "Okay then, we should probably begin the breeding then. Let me get changed over in the other room.", "Strip." Your sister, of all people, says this. "Excuse me?", "We are going to see you naked anyway. Let me begin.", Your sister proceeds to strip down, she motions to you, and you do the same. "Well... Fine.", The mature professor eventually breaks and takes off her clothes. Stripping down completely. As she is about to take her stockings off, "Leave those on, it would be better that way.". You can tell how wet she is from being commanded, not only from sensing it but from the puddle at her feet. Strangely, it is only now that you gain her information.

Name: Glynda Goodwitch
Alias/Nicknames: Professor Goodwitch (She is a professor afterall)
Height: 6'1", her high heels make her 6'5".
Bust: 36
Waist: 24
Hips: 34
Age: 40
Race: Human
Ethnicity: Valean
Skin: Fair
Hair: Blonde
Shave: Trimmed, Carpet matches the drapes.
Favorite Food: Medium Rare T-Bone Steak
Favorite Color: Purple
Favorite Flower: Peonies
Preferred Underwear color: Black
Favorite Position: Breeding press, or spitroast.
Fetish: She wants a man to completely dominate her, and breed her.
Virginity: No, lost it in a way she wishes hadn't happened.
Current Love Interest: N/A

You kind of figured the Fetish and Positions for her considering what has happened so far. Either way, you decide to help with her fantasies, although you wonder if your sister will help change them. "Bend over the desk." You tell her, "Yes... Master." That surprised you, but luckily your shocked face was not seen by her as she turned around. "I will not be fucking you just yet, sister?", She nods, smiling as she walks over to Glynda, gets on her knees, and starts licking milf pussy. "AH! Your tongue...!" she moans loudly as this happens, and you walk over and grab her tits from behind her, she lifts up slightly as you do, but she stays mostly down to let your sister do her work. You start to play with her and even reach one hand back and finger her asshole. "YESSSS!", she loves all the teasing and soon comes to a climax. As she calms down slightly, you tell your sister to keep going. "Ah! I just ca-". and again. You don't stop your attack on her ass and tits, and she cums over and over again. Eventually, you go around the table and steal a long sloppy kiss from her. This alone makes her cum as she moans into your mouth. You break from her and go around the table. Your sister had been fingering her at this point. At full mast, you move your sister away. You quickly hit a button on the app, "What just happened?" "You lost your virginity in a poor situation. What if you lost it here?", "If I were still a virgin now, you taking it would be the be- AHHH!", You plunge yourself hard into her. All of her orgasms from before and her high sensitivity hide the pain from her.

Your sister goes around and has Glynda suck and play with her tits. You start to pound into her large white ass and decide to smack it. This makes her cum, and so does when you grab her hair and pull, but letting her still reach your sister, who has now climbed onto the table and has Glynda's face in her crotch. You feel her tighten every orgasm she has, and you eventually have her flip over on the desk. You then climb up yourself and do a partial breeding press. You have her legs up, but You kept from leaning forward, so your sister can sit on her face. You decide to start sucking your sister's tits as well, as she starts playing with Glynda's. They both cum several times before you start to come close. You decide not to warn Glynda and fill her up with your sperm. She has her hardest orgasm as you do this. None of you can move afterward. Eventually, you wake up, it is late, and a blanket is laid over you and your sister. Glynda was gone. Your sister wakes up soon, and she finds a note under it. "Your clothes have been cleaned, and your dorm room number is on the back of this. Since you need 4 people for a team, the other 2 students know why you are here and are told to breed with you once you are up to it. You may want to learn about them before you do fuck them since you won't have seen them in your world.". Glynda definitely left this. "I guess we should head there soon after we get dressed, of course. You also realize you were no longer on her desk but the floor. You both get dressed and head to the dorms.