Douyara Koishita Mitai desu.

Hidaka, a cafe employee with the worst luck in love, always dates troublesome men and keeps getting heartbroken. When Miura, a dry college student working part-time, overhears his story of another broken heart, Hidaka thinks he's turned off, and suddenly Miura ends up staying at his house. Hidaka felt that Miura didn't like him, but when he talked to him, he was surprised to find that Miura acknowledged him, and Hidaka couldn't help but feel happy.

The next day, Miura encounters Hidaka at home where he is being attacked by his ex-boyfriend, and while one would think he would ignore a lovers' quarrel between two men, Miura helps him out, saying "He's mine"!??! As they gradually grow closer together over a meal and sleepover as thanks, Miura somehow becomes more and more overprotective...?

A cool modern college student x a warm-hearted cafe employee with the worst luck in men. A slowly growing possessiveness, a gentle and sweet love that begins with kinship.

(Source: Takeshobo, translated)

Note: Includes 2 extra chapters.