MrNightshade's manga / #Bittersweet(2)

Ummm it’s was a manga that for sure basically police officer in love wit the eldest brother of 3 and the eldest brother tries hard to dodge his advances and suddenly it comes out that when the eldest brother was young he had a crush on the police officer or whatever relevance that had to the plot and also the uke only ends up lovin him after he saves him from a burglary