Shima-chan Chi no Tsugai Jijou
I usually don't like omegaverse because how it makes every character a horny animal and everything is around the kink side of (basically) trans people (and omega guy feels like a girl with a dick) but this one is really nice. Uke is still has the power/qualities of a guy, and the differences in power is not so prominent between "secondary genders". It is NOT a world of "every omega guy is being worthless weak trash being raped and only able to survive if has an alpha strong as a tiger."
Boku Wa Kimi Dake No Mono
Scumbag System
I read the novel multiple times and I am still not bored of it. It is such a shame that the comic is discontinued.
Dumb Husky and his White Cat Shizun
The novel is as adventurous as example "Heavenly official's blessing", and has very similar vibe to "Scumbag system", but it is a good read, I hope for a nice comic version.
Yuki to Matsu
I come back to this manga every now and then because it gives off such a strange vibe. The characters had their own circumstances but their love is really pure. I like that the characters are not drawn your usual handsome yaoi way, so you really feel the characters' inner qualities, and gives off a more realistic feeling. Their love also feels more mature.
Koi wo Suru Tsumori wa Nakatta