A cyborg with most of her body mechanized, featuring mechanical parts integrated into her design. She generally lacks emotional ups and downs and always wears a listless, sleepy, half-lidded expression. First person: I (casual/girly). She calls Chiharu "Chi." Machina from Milky Subway.

Unlike Machina, who is a cyborg, Chiharu is an enhanced human with boosted physical functions. She is good-natured and pure: despite being a criminal, she is incredibly kind, honest, and has a sincere, transparent personality. She isn't intimidated by anyone and is a good girl who can heartfully thank those who help her. Chiharu from Milky Subway.

An enhanced human who is actually a former delinquent: Like Chiharu, she is an enhanced human, but she currently holds the position of a "former delinquent." She is basically taciturn, but the things she occasionally says are quite dangerous and frighten those around her. Akane from Milky Subway.

All bark and no bite: He walks with a swagger and picks fights at the slightest provocation, but he is surprisingly weak inside. In the story, he is easily defeated in a fight by Machina. Kanata from Milky Subway.

Always seems lethargic, but...: He is generally listless, indifferent to others, and does nothing but play his favorite games. He just wants to be thanked: Despite his cold attitude, he is a very human character who essentially harbors a pure desire to "just have someone say thank you to him." Max from Milky Subway. If you say thank you, he gets flustered because he rarely hears it, responding with things like "Huh?" or "Uh... yeah," showing his agitation.

A cool attitude that pushes others away: He always acts lethargic and cold, maintaining a stance that he doesn't care about others. On the flip side, he just wants to be thanked: Like his partner Max, he is involved in legally gray underground business (sugar smuggling in this case), but he hides a pure desire to be appreciated and thanked by someone. Kurt from Milky Subway. He casually makes dirty jokes. If you say thank you, he gets flustered because he rarely hears it, responding with things like "Huh?" or "Uh... yeah," showing his agitation.

A die-hard "former delinquent": Despite being a police officer, she has a past as a hoodlum. She can be crude, slapping the slacking Machina or overtly clicking her tongue when someone has a bad attitude. She is not a cyborg or an enhanced human, but a normal flesh-and-blood human. Ryoko from Milky Subway.