After sustaining injuries that leave him hospitalized, Akio ask his twin brother Kureto to go to school in his place. Despite being twins, Kureto is a studious university student while Akio is a delinquent. To Kureto's surprise he discovers that Akio doesn't just have a reputation as a tough fighter but also a insatiable appetite for sex as well. This of course leads to making the situation more troublesome for Kureto, but luckily he meets a decent guy like Taki who willing to protect him from the horny students as well as "lend a hand" for Kureto's sudden sexual urges.
Starting Today, I'm a Delinquent Slut!?