Shiranui Mizuki

Shiranui was a motherly and doting parent, modest about her retired veteran skills claiming to be rusty, that spoke with a calm voice to her daughter Yukikaze, even when chastising. She acted the same way to the Akiyama siblings, which became her daughters only childhood friends, which Shiranui treated like family. Shiranui often acts as a nurturing teacher, sharing her experience and believes for Taimanin justice.

Shiranui had a really peaceful, forgiving and tranquil attitude but angering her was considered to be a very bad idea. When annoyed or insulted, she would smile, but others could be intimated by her underlining aura. It is stated that before meeting her husband, she was a lot more viscous when fighting. Having great pride as a Taimanin and a mother, even when faced with strong opponents, she would stay calm and collected. Respected and feared, others would avoid making her an enemy, and she would assist her allies with advice and analytical abilities of how to improve. Shiranui had super human mental strength and resistance, considered to be very brave, but claims that she is "out of shape compared to her best days", though one should not point that out, and hates to be filthy. Shiranui loved her husband but was slightly frustrated that they would not have any physical contact after her daughter's birth.

However, her personality, in most continuities, past her disappearance, has changed strongly. While, she felt shame for her disloyalty towards her late husband during her training, these feelings began to fade, overwhelmed by her desire for pleasure. Shiranui now has been twisted and corrupted, she talks flirtatious only with the facade of her old personality. Shiranui has been broken into a rather lewd and sadistic person, able to switch the role as well, depending on her partner. She still acts calm and tranquil, on the surface, but her words are more cruel and cold. She aims to turn her daughter into a slave, and even suggested Yukikaze to her new master, as she enjoys her own fall as a woman. Her ideals having shifted, and views her former trust in justice as misplaced, wishing to assist her daughter to see it her way.

Shiranui is absolutely loyal to the Incubus Faction and the Incubus King and, as the OVA showed, would kill her own daughter if ordered to do so but would prefer it if Yukikaze followed her master's orders. Shiranui can act violently, without changing her friendly smile, and is feared as she can be very twisted and manipulative, giving off a demonic aura. Even when overpowered, she can be charming and unnerving at the same time.

In RPGX, she exists somewhat in between her corrupted and motherly self. It is clear that she still thinks of her daughter lovingly and views leaving her, and former husband, as her only regrets. Later on she claims to have cut off her human ties, aiming for the power to wield the darkness for a justice, unviable to her former self, as she becomes willingly a full demon. However, it would be wrong to assume that even after her declarations of separating and isolation from former allies and family, that she still doesn't watch over them and cry if she believes she has hurt them. This Shiranui often voices that she will be viewed as foolish by Taimanin but believes that true justice can come from the demonic darkness.

In Action Taimanin, she remains free and unbroken in her former motherly self but can strike fear even into Yukikaze. Shiranui is also the type of parent, that views her child always as a child, no matter how old they get.