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'm sure there'll be slices of 
cake in it for you, too.
لا ريب بأنّك ستحصل على بعض قطع الكعك أيضاً
Seguro que también hay pastel para ti.
Aposto que também há 
pedaços de bolo para você.