FM Boy

Oh Sa-Rang, a FM high school student who is so principled that he is called a walking moral textbook. He has a special secret, and that is... "I only hear kind words"! On the other hand, other people's bad words or swear words are just noise to him. Sa-Rang, who has been living in a world full of noise, meets 'Lina', a girl with a pure and clear voice one day. Sa-Rang feels excitement for the first time in her life and follows her to the broadcasting club... but turns out she's a swearer?! So-Ri Na is a surprising girl who "translates bad words to people and hears them as kind words." However, for some reason, it doesn't work on Sa-rang. A two-way communication romance between 'Sa-Rang', who has heard swearing vividly for the first time in her life, and the sweariest girl in the school, 'Lina'!

(Source: Naver, translated)