Oh right, the main girls had boyfriends, meaning it was netorare!? So TLDR both are sluts at this stage, the first boyfriend Shuichi is cowardly and runs for having an erection while Wakaba was just getting into it, he goes to the toilet and the magical teacher teleports where she is to fuck her, after the teacher is done she returns and goes bold on her bf Shuichi gives him a BJ and even eats his ass as he questions how she is good at this and she says she watched porn videos about it because she knows boys like that but after cumming she asks why MC isn't getting hard again, MC is serious and asks her she's changed a lot, she is on the verge of tears as she smiles. Then it switches to the other couple Maika and her BF Shouta. He asks if she is free for today because they haven't been together for a while but she excuses herself saying she has extras class because teacher Mashida asked her to, he laments he'll have to wait and goes to the gym but ends up finding Maika and Mashida having sex, stands there watching and gets a hard on, he tries demanding an explanation and she panicks saying isn't what it looks like and Mashida somehow gaslights her BF into being the culprit for the situation for the school triip (lmao) he ultimately ends becoming a cuck as both tell each other "Ilove you" as the teacher cums raw inside Maika.
The plot here is minimal and not much to think about to be fair.