Not much is known about him. He rescued the kendo club in his high school, which was on the verge of disbanding, by recruiting five more people to join it.

He's responsible, caring, and determine young man. He has a habit of helping and saving people even though he just met them. He is willing to help his fellow kendo club member's training for the upcoming kendo tournament. He isn't shown to be afraid of ghosts, but instead to be amazing that he can see ghosts without having any magic powers. Yuuken is good at persuading people when tries to make Ace and Deuce to get together against the Overblot miner even though they don’t get along very well.

Yu is whisked away to Night Raven College, an arcane academy in the world of Twisted Wonderland. Stranded until he can find a way home, Yu is allowed to stay on campus despite having no magic of his own. But when his new friends land him in trouble with the headmage, his future at the school looks bleak. Now Yu’s fate hinges on bringing together a pair of argumentative first-years and a fire-breathing monster cat…
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(Source: Viz Media)

An anime adaptation of the game with the same name.

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On January 1st, 2024, he announced on his Twitter account that he got married to the voice actress [Hitomi Oowada](https://anilist.co/staff/118920/Hitomi-Oowada).

Non-anime roles:
- Mydei - Honkai Star Rail (VG)

Yuuken Enma