Yuichi Jin is a prominent character in the anime series World Trigger. He is a member of Border, a defense agency protecting Earth from alien invaders known as Neighbors. Jin is known for his calm demeanor, strategic mind, and remarkable combat skills. He wields a Black Trigger, a powerful weapon that enhances his abilities. His special Side Effect allows him to foresee future events, making him a crucial asset in predicting enemy movements. Jin often acts as a mentor to younger agents, guiding them with his experience and wisdom.