Mashiro was a Kouga's lover and a member of the Revolutionary Army. After Kouga's death, she quit the revolutionary army and joined the retribution group. Mashiro was a young, curvaceous woman. She had long, silver, neck-length hair and golden eyes. She wore a dark headband and allowed her bangs to hang out beneath it. Mashiro was very serious and strict. She was also very intelligent and quick to thought as she was able to see Green's strategy against Mudi. After the death of her lover, Kouga, she became deeply depressed, which lead her to alcoholism to cope with his lose and a deep-seated grudge and desire for vengeance against the ones who killed him,having even abandoned the Revolutionary army for the sole sake of focusing on eliminating the Empire's assassin units to complete her vendetta.

Akame ga Kill!
Night Raid is the covert assassination branch of the Revolutionary Army, an uprising assembled to overthrow Prime Minister Honest, whose avarice and greed for power has lead him to take advantage of the child emperor's inexperience. Without a strong and benevolent leader, the rest of the nation is left to drown in poverty, strife, and ruin. Though the Night Raid members are all experienced killers, they understand that taking lives is far from commendable and that they will likely face retribution as they mercilessly eliminate anyone who stands in the revolution's way. This merry band of assassins' newest member is Tatsumi, a naïve boy from a remote village who had embarked on a journey to help his impoverished hometown and was won over by not only Night Raid's ideals, but also their resolve. Akame ga Kill! follows Tatsumi as he fights the Empire and comes face-to-face with powerful weapons, enemy assassins, challenges to his own morals and values, and ultimately, what it truly means to be an assassin with a cause. [Written by MAL Rewrite]