Shinku Kutsuki

He is an incredibly talented writer who often overworks himself to uphold his talents. He's a rather socially awkward and shy boy but he tries his best to be fairly friendly. He finds it incredibly hard to sleep as he often feels guilty at night that he's not working and his mind is constantly buzzing with new ideas and things that he needs to get down on paper before he forgets them. He tries his best to be polite and isn't too easily scared but often overthinks every word he speaks and then stays awake worrying about what he could've said differently.

That being said, Shinku is rather smart and has clearly worked very hard for his Ultimate title.

[From official description]