Sakura works as a clothing store clerk. On her day off, she unexpectedly finds herself undergoing training. Every time she becomes aware of her masochistic side, her body reacts sensitively, growing more aroused until she climaxes repeatedly. Training combined with gonzo sex, training with forceful blowjobs, training with masturbation, training during intercourse with male actors—faced with relentless torment including spontaneous pussy play, deep-throat penetration, and sex toys, she finally experiences a powerful, genuine orgasm for the first time. Her masochism knows no limits!