Eden no Uragawa

Overview

Akiba is indebted to a man named Arimura for giving him work, and so is obliged to take in Ikumi, who appears to be the ostensibly-straight Arimura's lover. It soon becomes obvious that the other man doesn't intend to pay much attention to Ikumi after foisting him off on Akiba. Though initially annoyed by the troublesome situation he's become tangled up in, Akiba slowly finds himself being won over by Ikumi’s pleasant, easy-going nature. The gentle, blessed days of an up-and-coming photographer and a cute freeloader... Can they continue indefinitely?

Source: AniList