Yuichi is an A-Class Solo Attacker (originally S-Class) at Border with precognitive powers. He is a very friendly and carefree person. He is a self-proclaimed "Talented Elite", but his skills and strategies in battle are more than enough to back up his overconfidence. His mother was killed by Neighbors but despite that, he doesn't hate Neighbors, as he has been to the Neighbor World and knows not all Neighbors are evil. He was the one who invited Yuma to join Border. Like Yuma's father, his mentor Soichi Mogami sacrificed his own life to create a Black Trigger, which Yuichi competed for, and later gave it away so that Yuma could officially join and be recognized as a Border agent by Headquarters. He is 19 years old.