Pinky_Peaches1408's manga / #Childhood Friends(1)

The cute and funny relationship between a 4 high school boys who will very slowly grow up, form a rock band called One Day, & fall in love with each other, while trying to keep a couple of them out of trouble with the Chinese mafia & street gangs. Originally was a series of strips contained in the collection 19 Days Anthology. Later became a full series. Source: MU