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...
Men can get by with knowledge 
of the Sengoku era alone!
تكفي الرجال حقبة سينغوكو وحدها للإفلاح بالأمر
¡Un hombre solo tiene que conocer
 el periodo Sengoku!
Homens não sobrevivem sabendo
 só sobre o período Sengoku!