Dorei na Kanojo 2

Return to the school life with a sex slave girlfriend!!
Mikio and Shizuka are openly going steady, but there's trouble in paradise: her big sister Hinata (Mikio's natural enemy!?) has come back to school as a teacher.
You won't want to miss the love triangle that develops.

Huge breasts! Ripe, sensitive nipples! Sex that leaves vaginas clenched full of spunk!
Shizuka is stubborn as ever. Only a good f*cking will keep her in line as Mikio's slave GF.
Keep her busy and horny with aphrodisiacs. Nowhere in school is off-limits:
do it in classrooms, locker rooms, during club, during lessons... even in the middle of chatting with students in the schoolyard!?

[From DLsite English]