Rui

Rui (累, lit. Trouble) is one of Hagoromo Gitsune's personal summons. She is the youngest of three fox siblings who reside in Inariyama.

Appearance
She has the ability to shift to her human form and her true form, which is an arctic fox.

In her human form, Rui appears as a child of six or seven, with pale blond hair, golden eyes and her fox ears are visible in this form. Like her sisters, she has very pale skin. She is usually seen in a simple white kimono.

In her fox form, she is about the size of a normal house cat, making her Gitsune's smallest summon. Rui has soft white fur and possesses two tails; she even boasts to have the softest footpads of all the foxes in Inariyama. A blue symbol is seen on her forehead.

Personality
Rui, being true to her name, is a very mischievous fox and has earned the moniker of "Little Troublemaker" due to her tricks. She is child-like and carefree; she often prefers to play than train but can be coaxed to do so if given the promise of a reward. Out of the three sisters, she is the most fond of her summoner and often appears even without being called just to spend time with Gitsune.

However, despite this, Rui will willingly put her life on the line if her summoner's life was at stake.

Abilities
Rui may be young, but she has shown great skill in fighting. She is very quick to her feet and people often have a hard time catching up to her (with the exception of Resshin), making her an effective distraction to the enemies.

She is an expert when it comes to performing Ice Release and Wind Release techniques.