Manami is a gay loan-shark but instead of having his clients always pay him back in cash, he also accepts men having sex with him as repayment. Makoto just happens to be the next victim of Manami due to the fact that his father (Shinji) ran away and left his teenage brother, grandmother, and him to deal with his debt. Along the way, the two begin to develop intense feelings for each other and can't keep their hands off the other.
Goriyou wa keikakutekini