MKON-138 — My Serious Girlfriend, With Whom I Was In A Serious Relationship, Was Cheated On By A Playboy And It Was Revealed That She Was A Born Dick-Obsessed Woman. - Kojima Miko

Miko and Yoshio, who had been in a healthy relationship, are photographed by Saito kissing after Miko hands him a condom on the way home from a date. Saito blackmails Miko and forces her into having sex with a condom. Miko is completely corrupted and starts begging for unprotected sex, but she still doesn't want to break up with Yoshio. She keeps saying that she still loves Yoshio, but in reality, she just wants to revel in the pleasure of cheating sex with a sense of transgression. She sees Saito as nothing more than a cock that makes her feel good.