Yūgo Kuga

Yūgo Kuga (空閑 有吾) is Yūma's father.

Appearance
He wears black gear when leaving to deal with Neighbour attacks and is usually seen wearing a cloak in the manga.

Background
Yūgo is a founder and was one of the earliest members to join Border before it went public. He also used to be a formal Border agent. He was a senior to Rindō, Shinoda, and a colleague to Kido. He sacrificed himself to save his son, Yūma. when he was about to die after being attacked and defeated by a Neighbour.

Abilities
Being a capable fighter, he was the person who coached Yuma up to a professional level, where Yuma only mastered his skills after his father's untimely passing.