傅总夫人也有马甲

On Seiran Island, secret society NLNS is united by Junnosuke Tachibana, who is determined to crush a law. They have found a benefactor, an unknown rich man, who offers them a secret base and cash. Their mission is to locate a mysterious girl and stop the law, keeping the SHO off their trail.

Tsumugi Aoba and Sou Sakura dated in high school. They both liked music. After graduating, Sou sent her a message breaking up. She started dating Minato Togawa, a mutual friend. 8 years later, she sees Sou, only to learn he is deaf.