Katakoi Kazoku
Uke has a big bro complex and is touchy feely with big bro, even to the extent where they kiss casually. Normal for them..I guess. Big bro has a kid and that kid, who is now in high school, has actually been pining for the uke since they were little. Finally letting his feelings get the better of him, big bro's kid holds his uncle, without consent and thus starts the odd story of the NEPHEW X UNCLE... The art isn't bad, in fact big bro and his son are both very good looking characters. It's just the story..it's just so twisted..idk. Other manga stories with uncles and nephew or family pairings usually use the "we aren't actually related by blood" ex machina but this one, they are both fully aware that they are blood relatives! It's mind numbingly odd. Give it a read if you aren't bothered by such things though..or skip it. Your choice.
Tenjou no Shita ni Koi
This has a "brothers" tag but don't worry, it's not incest. It's just that the MC is living in a house with 4 brothers because his parents are both in New York.
Renai Nante Yurushimasen!
Plot: Smut: Fluff:
Nirameba Koi