Searching for manga

There’s this yaoi manga I read a while back and it’s about a kid named Aki who is one of the elder siblings out of 5 if I remember correctly and he is used to suppressing his emotions for his younger siblings because their parents have passed away and he gets into a relationship with a much older childhood friend who works as a florist.
It’s a pretty old manga and it’s a part of a series. All siblings have their own stories and all of them are yaoi. Does anyone know this manga’s name?