Age: 21

Birthdate: December 17, 2001

Height: 180 cm

Weight: 68 kg

Eye Color: black

Hair Color: brown

Heisuke Mashimo is a low-ranking assassin with a talent for sniping but nothing else. Due to his lack of diversity in his skills, he struggled to find employment and was forced to live on top of a building in a severely damaged tent.

Heisuke owns a bird named Pisuke, whom he shares a close bond with.