Rentaro Satomi is a young teen of small frame and messy dark blue hair, with slightly slanted eyes and blue irises. His dark blue hair partially covers the whole of his forehead; reaching down below his eyes with a parted set of bangs untidily forming. Rentaro possesses thick sideburns connected to his hair which hang loose around his cheekbones on either side. Further; several strands of his unkempt hair, having gaps in several locations, arch around his thin eyebrows and hover on top of his thick eyelashes. His nose serves as roof to thin lips and a small jawline. He has small ears and normal-sized feet. Despite his profession, Rentaro shows no scars in any visible part of his body