Kioshi Finnikugo was born in New York, yet his parents come from Japan. He is unaware that he is, in fact, a Kitsune.
Kioshi is a Fennic Kitsune.

Kioshi's family fled Japan after telling the wrong person they were Kitsune.

Kioshi took 2 years of Criminal Justice, and spent a year with the NYPD before applying for The Library.

He knew of Fey from a young age, he's known of The Library, but not the involvement of his parents untill his 18th birthday.