I Have A Wife... I Was Eaten Up By A Mourning Woman Neat Student Who Fell In Love At First Sight With Me, A Tutor, And We Had Sex Over And Over Again, Even Though It Was An Affair... YUZURIHA Karen

At some point, Karen became a shut-in NEET loser, holed up at home. She spends her days immersed in games in her trashed room. Worried about her, her father hired a tutor to help her study a bit and get back into society. At first, Karen didn't open up to the male tutor at all, but when he taught her game攻略, she developed feelings for him. And since Karen has always had an extreme personality, she forcefully tried to have a physical relationship with him. The man, newly married and loving his wife, resisted, but gradually, Karen's techniques made him start sharing in the pleasure...