Suzurigi Akitaka

A man in his early thirties. Followed the mistress like a shadow. A servant of the Ryougi household.
A person hired to take care of Shiki’s education. A role model of a butler who served Shiki come rain or shine.
A companion who was kept constantly busy by Shiki’s willfulness and lack of common sense. He was on good terms with Mikiya.
By the way, his wardrobe consisted entirely of black suits. He got along quite well with Mikiya.

Garden of sinners Pamphlet: Kara no Kyoukai Settings Glossary