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...
"Our forlorn, sad society: Onin War"?
مجتمعنا القاحل الحزين، حرب أونين"؟"
¿"Un caos sin sensatez, Guerra de Onin"?
"Uma das nossas sociedades 
mais tristes de na Guerra Onin"?