Naoki is Japanese, and means 直 (nao) "honest, straight" and 樹 (ki) "tree". Tsuchiya is a Japanese surname, meaning "earthen house".
Behind the scenes
- This student was only featured in the PlayStation 2 version of Harry Potter and the Prisoner of Azkaban.
- Based on his name, he is most likely of Japanese descent.
- Harry Potter and the Prisoner of Azkaban (video game) (PS2 version only)