It was this yaoi manga where the uke's father remarried, and then he gets a little brother. They were really close, until idk wtf happened to the lil bro he becomes (depressed, I don't remember why). And then he begins to sexually harrass his big bro
Where the dude was like I eat dreams.
Gotchu gurl:
http://www.mangago.me/read-manga/datte_oishii_no_ga_warui/
Thanks fam