성별 : 정보신청
생일 : 정보신청
키/몸무게 : 정보신청

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.