성별 : 생일 : 키/몸무게 :
Sou (ソウ)Sou is a sentient motorrad like Hermes.
Sou is found by Photo, an at-the-time unnamed slave girl who managed to escape her captors. Soon after this interaction, he tells her that she should live, rather than die like she wanted.
The story flash-forwards several years and shows that Photo became a famous photographer, from which Sou took her name.