A 17-year-old Japanese highschool student with black/dark brown chin-length straight hair & brown eyes. She wears her hair pushed back from her face by an orange headband.

Yū usually wears her school uniform, which consists of a white long-sleeved dress-shirt worn beneath a green blazer, with a light greyish-green short pleated skirt & an orange necktie. She also wears long white socks & brown shoe-schools. When at home, she wears orange slippers.

Yū is very meek, quiet & gentle, although she still has some moments of aggression, & she can also use force when necessary. She's certainly not a push over. She seems to be lonely & doesn't seen yo have any friends.