Aihara-kun to Kashima-kun wa Love Comedy Kamoshirenai

A romantic comedy about two best friends with unrequited feelings for each other! Wait... what? Although the two are co-workers at the same restaurant, the staff are used to seeing them quarrel like cats and dogs. The truth is that they are ex-boyfriends still madly in love with one another, which is common knowledge to everyone... except them!

(Source: Renta!)