yaoi & some shounen-ai w/c has the brother (few sisters) somehow getting involved in the story
usual scenarios -big bro is straight, best friend is one-sidedly inlove with him but lil bro loves the big bro's bff. -lil bro is inlove with his older bro's straight friend. no attraction bet. older bro and bff. -love triangle. both brothers were vying for the best friend's heart.
