Everyone Stand Up! Boys Love Private High School
They have specialisation according to whether they're a top or a bottom, the uke actually has bad grades and he got to enroll because his body is so much that of a uke's. The top seme chose him for a partner because *(spoiler)* and they fall in love with each other; the uke gets one of his wishes "granted" and all's well. Very very very nice and cute and I really do like it. Kinda makes me get mixed feelings about it but I honestly think it's good
Oblivious Mr.B
The two of them work in the same company; the uke (o) found the seme (b) in a lounge (at the company), he was having his first heat and they had sex. They started going out and really liked each other (they never said love /either way they show strong emotions for one another/ but it's really cool of them to be perceiving of how long they've been together and how appropriate smth is). The uke met seme's friend (o) who then revealed to the seme that the uke isn't an omega, which the seme was already aware of. The uke is outed at the company in front of the seme so they couldn't avoid confrontation. They remain together because they really really like each other and they're very cute and erotic, it's awesome.
Ore To Joushi No Kakushikoto