MKON-022 My sister became an educational trainee and protected me from DQN Nozomi Arimura

Description

My sister's dream is to become a school teacher. And this time, I will be in charge of my class as a student. I want my favorite sister to do her best and make her dreams come true. However, my younger brother, I, is honestly uneasy because my class is full of DQN and the class has collapsed. All the pretty girls in the class were robbed of their virginity by DQNs. I can't sleep at night when I think that if DQNs give their sister a hand.