Yūgo Kuga

Yūgo Kuga (空閑 有吾) is a character in the manga and anime series World Trigger. He is Yūma Kuga's father and Border's former Commander-in-Chief.

Background
Yūgo is a founder and was one of the earliest members to join Border before it went public. He was a senior to Takumi Rindō and Masafumi Shinoda, and a colleague of Masamune Kido.

He and Yūma fought in a war between Calvaria and Spinthir, helping Calvaria on behalf of his friend Raymond.

He sacrificed himself to save his son, Yūma when he was about to die after being attacked and defeated by an unknown enemy. This was done by converting his life energy into a Black Trigger which sealed Yūma's dying body and replaced it.

Abilities
Yūgo was a fighter of the highest caliber, and was the person who taught Yūma how to fight. His presence during the war against Spinthir was said to be extremely important for Calvaria. Before his death, he was about as strong as Shinoda during the Large-Scale Invasion Arc and Mogami's rival. He also had enough trion to be able to create a Black Trigger and possess a Side Effect. The latter allowed him to see through lies, and was passed down to his son through his Black Trigger.