Maina

A member of Arc Aile who, like Cisqua, chose to use weapons rather than Edel Raid, Maina is an old friend of Cisqua. She appears in an episode of the anime to bring Ren back to HQ as the main Arc Aile trio uses the disguise of a vacation to help find Edel Garden. It turns out she was controlling a Sting Raid that was attacking people on the ship through song, but in the end Cisqua uses the song against her and has to kill her to prove her dedication to Ren.

Cisqua also claims that Maina is the better sniper, but worse at everything else.