Gin-san takes history lessons, and teaches you how to hide your porn mags?
Tsukuyo tries to teach Seita history, the subject he's not great at. However, her training (?) methods end up leaving him scarred, which makes desperate Seita ask Gin-san to take over as his tutor...
What if they immediately open the 
lock keeping the porn mags safe?
ماذا لو فتحوا قفل خزنة المجلّات الفاضحة فجأة؟
E se eles abrirem de cara o 
que estiver com as revistas?