Yuki holds the appearance of a stereotypical butler in anime and manga. He has white hair that's balding as well as bushy eyebrows and a mustache. He wears a plain black suit to go with his attire. He is somewhat of a masochist and is attracted to Mikari.
He's a kind gentleman that treats Mikari with full respect.
When he and Mikari were being held captive by a serial killer in chapter 52, Mikari provoked the killer causing him to put her in a gun point, Yuki immediately tackled the killer, in fear of disobeying Mikari's parents wish to protect her.
- Hobbies: housework assistance, mental arithmetic, cooking, exercising, massage,
- Likes: hot spring
- Dislikes: Coriande
- Favorite celebrity: Yuriko Yoshitaka
- He is probably a masochist.