"it's a reward, i'll make you suffer more, manager." yuki, the sales manager of an office equipment company in tokyo, was stressed from work pressure and troubled by her lazy subordinate, yoshino. one day, yuki slipped up in front of yoshino while drunk and realized she had masochistic tendencies. yoshino then summoned yuki to an sm hotel during lunch break, using wax and a whip to inflict pain, and his cock to bring pleasure, transforming her into a bitch driven by primal instincts.