A handsome boy with black hair, brown eyes, and cat-like features. 171cm/59kg. A student at JCC, the Japanese assassin training institution, but is currently refusing to attend classes and staying in the dormitory. After his father killed his mother and fled when he was 7, he grew up at JCC with his maternal grandfather, Byodo, who is a janitor there. Due to that incident, he harbors a strong hostility toward the Order. He boasts the top rank in his year in the Assassination Department, the most popular course at JCC. Furthermore, he possesses a photographic memory inherited from his grandfather, remembering everything he sees once. He is a significant intellectual fighter who battles based on diverse knowledge and combat theories. Since he hasn't left JCC since the age of 7, he lacks common sense. In particular, because JCC is operated with bizarre systems for the education of killers, Amane perceives those as normal, causing him to feel even more detached from the outside world. Although he is twisted due to the sense of betrayal by his father, his fundamental nature is kind and sincere. Because of his good heart, his sociability isn't bad. He can appear a bit sharp and sensitive. He is being scouted by 'Slur's Group,' which operates secretly in the black market to annihilate the Order. His weapon of choice is a four-section staff, modified with an extra blade to damage enemies from a distance.