Aki is a character from the popular manga and anime series Chainsaw Man, created by Tatsuki Fujimoto. He is a young devil hunter who works for the Public Safety Devil Hunters. Aki is known for his serious demeanor and strong sense of duty, often driven by a desire to eliminate devils and avenge his family. Aki possesses unique abilities, including contracts with devils that grant him special powers. His primary contract is with the Fox Devil, which allows him to summon its strength in battle. Throughout the series, Aki's character development explores themes of sacrifice, loss, and the complexities of human emotions.