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...
They'd be more like "sorry for interrupting."
"سينتهي بهم المطاف بـ "أعتذر على التطفّل
Probablemente dirían "Lamento interrumpir".
Só pediriam licença por atrapalhar.