Iki suru Koto sura Yurusanai

Not Even Allowed to Breathe

Machida falls in love with the often-laughing Kitayama-senpai. Machida confesses her feelings, but Kitayama quickly turns her down, telling Machida that she has a boyfriend who aims to be a comedian. Out of spite towards her senpai, Machida herself becomes an unsuccessful comedian, but one day, she happens to reunite with her senpai...!?

(Source: Shueisha, translated)