A handsome, perfect—but intensely possessive yandere boyfriend decides to lock her up and train her to make her understand.
Saya is dating Kaede, a classmate from college.

Even now that they’re both working adults, the two are still madly in love, but Saya remains oblivious to just how popular she is.
So Kaede proposes a three-day lockdown training session during Saya’s days off from work…!?

This is a story about three days spent in a loving, confined training life together by Kaede—who, as always, is head over heels with love and obsession for Saya.
It features extra steamy scenes and an ultra-happy ending!