Race Shinki Height147cm (4'10") While wandering about as a spirit, Yukine was picked up by Yato and made into a Shinki. When called "Sekki" he transforms into a katana.

Spoiler

He died at a young age, making him miss his normal life as a middle schooler. He acts like his age, and was once stealing money from people with the excuse that it's okay since he's dead. After being "saved" by Hiyori, he becomes more obedient and respects Yato and Hiyori. When he was alive he had trouble with his father as seen by Yato when he first obtains Yukine.

In a katana form, he finds Yato's sweaty hands so disgusting that he calls him "Drippy."