Saiaku no Jinsei
SKIP THE FIRST STORY (aka chapter 1). Seriously the main love interest is terrible and puts his fetish before the actual person he's dating. He also can't read the mood to save his life (or his relationship). The second relationship is really sweet though! (if a little bit stalkerish at times) The main guy finds a dude that is constantly doing the right thing at the wrong time in the wrong place, so he's considered a troublemaker even though he's genuinely just trying to help. Main guy decides that he wants to marry the heroic tsundere in highschool, but looses track of him when the other guy gets expelled over a misunderstanding. Years later, he finds the guy again, and takes him home and does all but tackle him yelling "Mine!". It's great.
Idol-kun wa Koi wo Shiranai
The main character is an idiot, but he's a //cute// idiot, and that's what matters.
Sutenaide My Hero
This is really interesting. Seems like the omega might end up topping 0_o.
Veggie Channel
I'll admit, I usually don't go for the whole "fujoshi & fundanshi" thing but this situation is really interesting! not sure if I'm going to stick with this one, but it's first chapter has certainly drawn me in. (I really want to know what the MC looks like, though)
Kenka Bancho Otome - Koi no Battle Royale
Great manga! It has a much better flow to it than the anime did. Kinda want to punch the MC's twin in the face though. I wish people would stop using the "genderbender" tag for things that don't actually involve a person magically turning into the opposite sex, though.
Mousou Cherry
This is stupid and //please// don't try any of this without prep but it's honestly really hot.
Kajou Mousou Shounen