Keisuke, the son who fell in love with his mother, Yuka.He has ripe limbs and good looks.Every time he is exposed to unprotected sex appeal, he becomes conscious of Yuka not as her mother but as a sexual object.He perseveres and plans to make it his own, stealing her father's eyes and attacking Yuka. "Did you like the chastity belt I gave you? If you want me to take it off, please ask me."Yuka was puzzled by Keisuke's violent behavior, but rebelled.