Ore dake no Otoko

Summary

After Hakana is rejected by his crush and comforted by Rinya, their childhood friendship develops into a friendship with benefits. Since his physical needs are taken care of by Rinya, Hakana feels no desire to tie himself down with a serious relationship until Rinya's ex-lover shows up and wants a second chance. Suddenly, just being friends isn't enough for Hakana, but can the two of them handle taking things to the next level? (Source: DMG)