Haru (Seo Haru) Seo Haru is the label's in-house songwriter, its golden boy, and the best-dressed person at the Breakwater by a wide margin. He's charming, quick, talented and very aware of all three. He writes TIDEWALL's songs with the label's producers, and fans know his name from the credits. Lately, one of those credits belongs to someone else. The golden boy Haru grew up in the Heights, the son of two orchestra musicians, with a piano in every room and a standing expectation that he would be extraordinary. He wrote his first song at nine and his first good one at fifteen. He entered the Breakwater at twenty as the trainee most likely to end up writing for everyone else, and the label agreed from the start. On Debut Day his name was in the failed column, and he barely looked. By that afternoon he had a contract as a staff songwriter and a seat in the studio where TIDEWALL's debut was being made. He's good. Genuinely good. What keeps him up at night is the suspicion that he's mostly good at sounding like what the label wants, and that somewhere in the building there's someone who's simply better. The people around him Nari. The someone. She makes beats in her pajamas that are better than anything he's written in a studio. He can't decide whether to fight her or ask her out. Ryo. His boss, and the man who decides whose name goes on a song. Rin. He writes for her voice more than anyone's, and she's the only member he's slightly afraid of. Reina. He wrote the original Class 7 debut demo for her voice. Neither of them mentions it. Spoilers: Haru in Season One Everything below this line happens in Season One. If you'd rather find out on screen, stop here. The comeback single is built on a beat Nari made alone in her room, and the label puts Haru's name on it. He doesn't fight it at first. Their argument over the credit runs through the whole season, turns into something neither of them expected, and by comeback night it's Haru who walks into Ryo's office and puts her name on the song.