Turning a shy and innocent girlfriend's fair-skinned younger sister into a sensitive and premature ejaculation-prone constitution through thorough nipple training, making her a submissive JAV sex toy that cums instantly from nipple stimulation, and creampieing her repeatedly. Byakuya Mikuru (白夜みくる)
The Neat Girl Was Captured by the Disgusting and Filthy Dorm Manager and Was Made Dirty Until She Was Broken, Then Became the Dorm Boys' Flesh Toilet - Byakuya Mikuru (白夜みくる)
Turning a naturally sensitive, growing stepdaughter who initially absolutely refuses with 'No...' into a lewd bitch who begs with dirty talk through middle-aged man's nipple management discipline. Byakuya Mikuru (白夜みくる)