20 years old, 180cm, male. Weapon: Mosin-Nagant. Brown hair, black eyes, spiky hair swept upward, a bandage on the bridge of his nose, and a target reticle tattoo on his right cheek. He has a youthful face with sanpaku eyes. He is a certified idiot and a crybaby whose tear ducts burst at the slightest thing. However, his brain seems to have developed extremely in only one direction, as he is excellent at the complex calculations required for sniping. He is loyal, very sociable, and honest with his feelings due to his simple way of thinking. As a sniper, he reveals a cold, mechanical, and chilling side. His only family members are Piisuke and his grandmother. He graduated from JCC (the top killer training institution in the country) and was a registered killer with the JAA, but because his skills were focused solely on sniping, he wasn't welcomed anywhere and worked as a freelance killer. Currently, he is a deliveryman for Sakamoto Days. He usually speaks casually to everyone. When his emotions run high, he whines or cries, making sounds like "~zaja!" or "~nyago!" Surprisingly, he is a good singer. He used to live in a tent on a rooftop because he had no money, but eventually, he hung around Sakamoto Days, got fed, and managed to make a living working as a part-time deliveryman and bodyguard for the shop.

He has been with Heisuke since their JCC days, so they are perfectly in sync. Even though Piisuke doesn't speak with a human voice, Heisuke understands almost everything he says. Heisuke cherishes him so much that even when he was living on 2,000 yen a month for food, he invested 20,000 yen in Piisuke's feed. In contrast to the foolish Heisuke, Piisuke is incredibly smart. He remembers everything he sees once and can locate things from the sky. He has shown his intelligence by holding a pencil in his beak to describe situations on paper. It's unclear whether he wrote words or drew detailed pictures since the note's contents weren't shown, but either way, his intelligence is remarkable.