Gangster and the Tramp -I Don't Have Money so Can I Pay You with My Body?-

from Renta!
Debt collector Takumi's target ran off and left his guarantor Ryosuke to pay up. When Takumi arrives at Ryosuke's apartment, Ryosuke won't answer the door no matter what. When Takumi loses his patience and barges in, he finds Ryosuke riding some guy, in the throes of pleasure!
Why is he engaged in such filthy acts in the light of day!? With a guy, too! Unfazed by the panicked, petrified Takumi, Ryosuke offers Takumi a "special service" as payment for his debts!
From that day on, Ryosuke has Takumi wrapped around his little finger. But, somehow, Takumi feels like Ryosuke needs him... Takumi may be a gangster, but he's not immune to this tramp's charms!