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...
I'll now throw a bunch of 
these cards and knives at you.
سأقذف الآن مجموعة الأوراق والسكاكين نحوك
Te arrojaré unas cartas y unos kunai.
Vou jogar um monte dessas
 cartas e facas em você.