https://www.dlsite.com/maniax/work/=/product_id/RJ275746.html

A pair of sisters transfer to a new school, immediately on the way to class they are both hypno app-ed. The younger sister is made the exclusive girlfriend of the app ringleader, while the older sister is turned into the class slut (although to be fair it seems like the rest of the class got the same).

As before Achunet's presentation is a little dry but there's several good scenarios.

lol @ the plot

Base +9