Dare no Tame no Aina no ka?

Soon after entering high school, high school girl Mimi has a fateful reunion with Fuuma, a boy she once fell in love with at first sight. She tries to get her classmate, Yutaka, who is Fuuma's best friend, to introduce her to Fuuma, but he refuses. What's more, it seems that Fuuma and Yutaka are in the middle of a fight, and for some reason, Yutaka asks her to "help them make up"... A mysterious love triangle with an unpredictable ending begins!

(Source: Kodansha, translated)