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...
The PTA will never turn 
their attention to the porn.
لن تلتفت أعين رابطة الآباء والمعلّمين إلى المجلّات
Tus revistas no llamarán 
la atención de la APA.
A Associação nem vai 
prestar atenção nisso.