Batanen Fujioka  

, バタネン藤岡

Batanen, who is 39 years old and belongs to the senior class of the police department, has been treating Natsuki like his sister while also harboring romantic feelings for her. Despite being hesitant to make a move, he becomes uncertain when Natsuki takes the first step towards him. Batanen possesses regenerative abilities that make him nearly immortal and is an excellent marksman.