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 thought it wouldn't do for your feet 
to grow cold on this winter night,
شعرتُ بأنّ قدميك قد تصابان بالبرد في هذه الليلة القارسة
"Quería evitar que sus pies se 
enfriaran en esta noche de invierno,
Achei que não seria bom que seus pés 
se esfriassem em uma noite de inverno,