Futari no Ejiki

The night that my crush's younger brother found out who I like, I found myself in bed with none other than...?

"Yuki" for lunch, "Yuuki" for dinner. The two look and sound the same, yet have completely different personalities inside—one is gentle and calm, and the other is a hotheaded bully. Aoi Manamiya, a university student who spends most of his time studying and working part-time at a cafe, has a crush on Yuki Asakura, a caring coworker and good cook to boot. Aoi, whose feelings grow as Yuki comes over every day to feed him, acts callous towards him in an effort to hide his feelings. No matter how nice Yuki is to me, he's still a man...or so Aoi tells himself. In the meantime, Yuki's younger brother, Yuuki, easily sees through the love Aoi had tried so hard to hide. One night, when Aoi accidentally falls asleep, he finds himself tied to the bed, with his clothes disheveled?!

(Source: Booklive)