Kateikyoushi x Saimin 2 The Animation

Masato is harassed and abused by the Shinjo sisters, two older women who work as his private tutors. Exhausted both physically and mentally by the two sisters, he receives help from Sakiko, the owner of a mysterious club called "Gentil Donna." That woman gives him a mind-control device, which he uses to take revenge on his teachers. First, he controls Serina, and after he finishes sexually abusing her, he manipulates her to trap his next victim, her sister Haruna.