When she starts to object, he tells her he has faith in her. One of the Guards, however, escapes and ambushes Mine, so Tatsumi latches on to the attacker, telling Mine to take the shot (at close range).

Tatsumi and Mine retreat as her job is done and while leaving he learns why Mine fights against the Empire. While Mine kills Iokal with one shot the remaining members of Night Raid are left to deal with his bodyguards. The two remain paired when they go on their next mission: to kill a relative of the Prime Minister Iokal. They slowly form a friendship, although she'd still tease him. One of her earlier missions has her paired up with Tatsumi where she explains to him a bit more about the Empire and the other Night Raid members. With the promise of a new country where diplomatic relations with the people from the west would improve, she fights so others of her race can be accepted and their children would not go through the discrimination and suffering she had. She joined the Revolutionary Army after learning it was forming alliances with countries from the west. The girl spent most of her childhood as an orphan little girl who lived on the street, and she was discriminated because she was a half-breed. Mine was born and raised in the western borders of the Empire, into a poor family, at some point of her childhood, her parents died. At the same time, she has demonstrated being very worried about Tatsumi's well being, especially when he has not returned to the hideout (due to having been imprisoned) contemplating how she would have never thought she would become so anxious due to lack of contact with someone. Since having begun to date Tatsumi, she has shown a jealous side, such as over Leone's usual flirty advances into Tatsumi, as well as lecturing him how he has to refuse such advances firmly as he now has a girlfriend. Over time, she develops romantic feelings for Tatsumi who returns the same feelings and the two having officially entered an intimate relationship. Mine wants there to be no racial discrimination, due to the fact because she is of half-foreign blood, which led her to being targeted by others as a little girl. She shows her compassionate side on one occasion by teasing Tatsumi to get his mind off of the death of Susanoo. Despite her cold exterior, she has shown to be a warm and kind girl to those she has opened up to. She had a tendency to tease Tatsumi, due to him being the newest member, and often said he wouldn't last. Mine is often quick to anger, and easily irritated with those that she does not know well. Mine is a girl, with long pink hair, topped by two pink ribbon, and fuchsia eyes.

Who killed mine in akame ga kill