Kashikomarimashita, Destiny
Sweet and heart-warming. An omega son of a wealthy, well-connected alpha family is left alone with only his beta bulter after his parents die and is taken in by a family that was friends with his. The son of the head of the family is his soulmate but has struggled against acknowledging it since they were children because he's sick of having no choices in life. But one day the omega goes into heat and they are pulled together anyway. This manga also goes into the personal life of the beta butler and his romance with a fellow butler who's an alpha. That's also super sweet, maybe even more so. ETA: This manga turned out to be way more about the butler couple! It seems rare to find so many good feels in an omegaverse story but there you have it. This is probably THE BEST omegaverse manga.
Sutenaide My Hero
An alpha rescues an omega from bullies one day and the omega admires him ever since and promises to protect him one day. Many years later they are reunited and the omega still cares for him so the alpha decides that even though he's straight he'll go out with him to turn the situation to his benefit and get free food, lodging, etc. Very good look seme and uke here.
Totsugimasen Kara!
The rare cute omegaverse manga. Omega is part of a bridal audition like The Bachelor lol. At first the omega and alpha bicker a lot but they also have fun together and fall in love. Sweet cuteness. No sex at all though, which is a bummer.
Sayonara Alpha
I really heart the angst with the poor torn Omega, and this ended well, but it was a tad too pedo feeling for me with the hugging and panting while holding the child alpha. Would've liked a bit more with the alpha as an adult, very sexy. One of the sexiest ukes I've seen in an Omegaverse, though, and he could hold his own in a fight and stand up for himself. Bonus points for no rape!
Unmei Ja Nai Hito
Hm, so we'll see how this goes. Omega is saved by an alpha when he unexpectedly goes in to heat. He thinks the alpha is his fated pair and so hunts him down, trying to worm his way into his life. The alpha seems weirdly indifferent, not acknowledging him as his fated pair. So Omega agrees to try to be a model to stay close to him.
Ore no Kirai na Tsugaisama
Ehhh, I just don't know. The prevalence of rape in omegaverse stories bothers me! And this is basically twisted rape smut.
Sore Demo Suki Desu Kasahara-san
The rare amusing omegaverse! I like it so far, with the insistent/aggressive omega and the flustered alpha- it's a nice change of pace! The omega still hasn't really revealed why he wants the alpha to bite him, though, and I have a feeling after seeing all those pictures that he has a stalker ex.
In the Cage
Haru is a looked-down upon omega who’s having a secret relationship with his best friend, an alpha, who’s engaged to another boy. Haru is obviously not happy but accepts his lot in life until his best friend’s older brother, Renji, comes home from a long absence, wanted to claim Haru as his mate.
Juliet no Baka
Omega and Alpha are mates but they're not in a romantic relationship, they only see each other when the omega is in heat, though it's pretty obvious that neither are happy with their situation and wish they were closer. This is kinda depressing so far, tbh.
Unmei no Kisu wa Oazuke