Mahiro Tadai The boy’s appearance is bald and circled

In order to save the younger brother who goes to the boys’ school from bullying, his sister Mahiro was able to sneak into the school dressed as a man and grasp the weaknesses of the bullies and stop the bullying. However, Mahiro suffers a counterattack from the bullies who know that Mahiro is a woman. At first it was bullish Mahiro, but gradually fell into the pleasure of being abusive, drowning in lust and disturbed.