A 27-year-old man and a master of disguise. He is handsome enough to be called a heartthrob in the story, versatile, and possesses top-tier fighting skills. He is sly and always seen smiling, but his expression changes instantly when he gets angry. He has many tattoos. He is a non-smoker.

A 27-year-old woman with long blue hair who often wears tight white t-shirts. She has a cheerful and funny personality and is a frequent smoker. She is an expert marksman.

A 27-year-old man and a smoker. He is incredibly strong, known as the ultimate hitman, and can use anything as a weapon. He is blunt and cold, but secretly a funny character.

The quartet of troublemakers.

A beautiful woman who Sakamoto Taro fell in love with at first sight. She is kind and gentle.