Rui Kijima is a manga artist who is entirely devoted to her work and doesn't concern herself with matters of the heart. Although her editor suggests that she should try having romantic experiences, she has no interest in doing so. That all changes when an unexpected visitor shows up at her door.
The visitor is Keigo Azuma, the CEO of a money-lending company. He reveals to Rui that she is the guarantor for a friend who has failed to repay a debt of $60,000. Rui is unable to pay such a hefty sum and promises to pay it back as soon as she can. However, Keigo offers to extend the due date if she agrees to use her body as compensation.
