Asa Mitaka (三み鷹たか アサ Mitaka Asa?) is the main protagonist of the Academy Saga. She is a high school student who became the host of the War Devil, Yoru, making her the inhabitance of the War Fiend (戦せん争そうの魔ま人じん Sensō no Majin?), though she still retains her human personality when Yoru allows her control, making her a rare case of a living Fiend host. She attends Fourth East High School with Denji, with whom she briefly attempted to start a relationship with, ending in disaster, though she develops a crush on his alter-ego, Chainsaw Man instead. After a meeting with Fami, she becomes a famous Devil Hunter as a member of the Chainsaw Man Church. After the Chainsaw Man Church fails, Asa becomes a fugitive and subsequently a terrorist who breaks into a maximum security Public Safety facility to free Chainsaw Man who is held captive by the state.