Contradict

A cocky and confident Yajima harbors dislike for Torikai, a cool and talented fellow trainee in the Rescue Team. The two constantly quarrel, but one day they cross the line while squabbling and end up sleeping together. Yajima regrets it, but at the same time he cannot get Torikai's pleading expression out of his head. However, because they have been rivals until now, he just can't bring himself to be honest with Torikai.

(Source: Frontier Works, translated)

Note: The original serialization ran for five chapters until 2022-04-23. The serialization was restarted on 2023-12-22.