I got the feeling, even before he introduced himself, that he was Jaeyi’s older brother. Cause I remember the scene where Jaeyi has a flashback of his brother and it’s some dude with lighter coloured hair.
I can tell that he’s going to be a pain in the ass who is going to cause misunderstandings and get in the way of the main couple. Though I’d love to be proven wrong about that, but he’s kinda being sus.
I would’ve loved a sequel featuring Noboru and exploring his story and background. After everything he went through, I would’ve loved to see his journey forward and him being with someone he loves and lives him back (Haruki).