Responses
I can't remember the name. But I know it is part of a series about a group of brothers. The black haired boy is the younger brother, and the light haired boy is the adopted son of the older brother's lover.
Found a name. The first book in the series is called Mainichi seiten.
Does anyone knows this manga?
http://www.mangago.me/read-manga/furachi_na_bokura/an/furachi-na-bokura-chapter-4(End).html/1/