Omegaverse. Rival delinquents become lovers due to omegaverse machinations. Very short-lived rivalry. By the 2nd chapter there's like 0 trace of there being a rivalry. Didn't like how the personality of the omega changed a bit (a lot) as the story went on but it's still good!
Rival actors. Kind of a one-sided rivalry on the part of the uke.
Warning: Rape
Two highschool kabuki actors where the young actor who does female roles is in a one-sided rivalry with the other.
First couple: Alpha hates Omega but it's one-sided. Doesn't want to give in to fated pair shit.
Second Couple: Dislike each other because they're the butlers of first couple and they rubbed each other the wrong way.
An ex couple reunite in college and start feeling them feels again. They broke up back then because one of them said they were only satisfying each other's sexual needs.
Igen has been seeking revenge against the Azukun who killed his family and betrayed the throne. Now, there is only one survivor of the Azukun clan: Kasan. He keeps Kasan as his slave, wishing to torment him, but the more time they spend with each other, the more his feelings start to waver.
Enemies to Lovers
A guy who's desperate to get married just can't seem to find someone compatible. One day, he bumps into a coworker who turns out to be an ex-schoolmate of his. This ex-schoolmate of his hates his guts cause he made fun of his favorite anime character.
Hate to Love.
Cute, lighthearted, & very funny.
Onoe, who works for a magazine, is suddenly thrown into a stakeout team with Kaburagi, his self-declared rival. Kaburagi is oblivious to this. But as they continue to team up to search for their scoops, something starts to develop between them.
Minsoo reunites with Junwon whom he has a one-sided hate/rivalry with. But Junwon is actually in love w Minsoo so he starts following him everywhere after transferring to Minsoo's college course. To stop the madness, Minsoo proposes a one-month dating contract.
● One-sided hate
Sequel to "Pendulum: Kemonobito Omegaverse"
In Daato's desire to protect his life with his sister, he ends up in an unfortunate incident w/c led to him mating with and creating a bond with Juda after his heat's sudden arrival. Both of them hate that they're now bonded with each other.
● Mutual dislike
Abarenbo honey