Yumi

Normal
Yumi has pale white skin and icy blue eyes. Her hair is a dark-gray color of medium length that is propped up slightly in the back by her white bow that has blue stripes on the ends. Like many of the female characters in Senran Kagura, Yumi has a voluptuous, curvy figure, possessing stupendously large, bouncy breasts, thick thighs, and soft luscious buttocks. In her shinobi clothes, she wears a solid white furisode kimono that hangs off her shoulders and exposes a large amount of her plump breasts. A plentiful portion of her thighs and bottom are exposed as well, revealing that Yumi does not wear panties underneath her kimono, allowing her buttocks to jiggle freely without any restraint. The outfit has a blue double-lined trim with a blue obi on the back. Yumi also wears white socks but no shoes, but since Estival Versus, she also wears lavender flip flops.

Ice Queen Mode
In her Ice Queen mode, Yumi loses her hair tie and allowing her hair to become longer in length in addition to becoming an icy-blue color and her eyes becoming red in hue.

Personality
As her name implies, Yumi has a very cool personality. She is a very calm and very serious girl. She gives nothing but one hundred percent when it comes to achieving a personal ambition and will go to any lengths to realize a goal she has set out for herself. For these reasons she can be viewed as stubborn when people present their own personal ideals and values in conflict with her own.

Though despite this, she has no issues stepping back and admitting when she's wrong after some serious thought. This was demonstrated during the Gessen Arc of Shinovi Versus when Yumi, who was deeply conflicted about her views on evil over the course of the story, finally accepting that she was wrong by the time of her final battle with Asuka. This was demonstrated a second time the Estival Versus OVA when she began to realize that she was actually being far too strict on her comrades and promised to give them more time to relax.

Yumi can also be considered extremely critical, as demonstrated during Hanzō Academy's story in Shinovi Versus where she deemed Asuka unworthy of facing her and made her fight Gessen's lower ranked shinobi as an alternative. This was due to Asuka presenting what she believed to be incompetence as a shinobi. Despite this, Yumi has also been shown to be modest, such as when she deemed Yozakura far stronger than her despite Yozakura insisting otherwise.

While being very harsh at times, she's also very caring underneath her cold exterior. Even Shiki states that Yumi is only hard on her comrades because she genuinely cares about them and wants the most out of each of them. This often leads to her trying to push them too hard and forgetting to allow both them and herself to relax every once and while. In Estival Versus, Yumi tries to be more lenient and considerate of her comrades' feelings, leaving Yozakura to discipline and yell at the others in her place when things get out of hand.

Kurokage
Yumi has the utmost respect and love for Kurokage as he was the one who gave her purpose in life after the death of her parents.

While Yumi's initial intention for becoming a shinobi was to seek revenge on those who killed her parents, she eventually changed her mind and wanted to use her power towards creating Kurokage's ideal world; a place where no evil exists.

Little did she know that the path she was walking was the opposite of what Kurokage had intended for her. He never wanted her to follow in his footsteps and didn't want her to feel like owed it to him to carry out his dream.

During the Shinobi Battle Royal, Yumi experienced inner conflict on her feelings regarding good and evil. As she battled against the other schools, she began to question if good and evil were as black and white as she had always thought. However, she was reluctant to think otherwise as she believed it would go against Kurokage's teachings despite her newly developing feelings on the matter.

By the end of the Shinobi Battle Royale, Yumi accepts that the concept of good and evil wasn't as simple as she had originally thought, and hopes that Kurokage can forgive her for going against his teachings. However, she doesn't know that Kurokage is happy for her and the path she chose.

Yumi's Mother & Father
While very little is known of Yumi's parents, it's implied that she had a very good relationship with them considering the fact she wanted to claim revenge for the deaths during the start of her shinobi training

Murakumo
Murakumo and Yumi have a stable relationship. Yumi does not think ill of Murakumo in any way and merely wants her to be more confident in herself such as when she even goes as far as trying to flatter Murakumo about how she doesn't need her mask.

Yozakura
Yumi has the best relationship with Yozakura out all the Gessen shinobi aside from Takashi. Yozakura has a great respect for Yumi and is the only member of Gessen that is as diligent as she is when it comes to their training as shinobi. Due to their similar work ethics, Yumi and Yozakura spend the most time together and often have one-to-one sparring sessions. When the others are goofing off, Yumi feels as though she can always look to Yozakura for support and agreement on the situation. Yumi thinks highly of Yozakura's skills and power, viewing Yozakura to be stronger than herself despite Yozakura believing Yumi to be the stronger of the two since Yumi is the leader and always wins their sparring matches. With Yumi eventually deciding to try and be more lenient and considerate of her comrades, this leads to Yozakura taking on the disciplinary role herself as she scolds the others when they're not listening to Yumi so she won't have to do it herself anymore.

Shiki
Yumi and Shiki have a stable relationship. Shiki really enjoys coming to Yumi and asking her questions to which Yumi will always go above and beyond to get an answer to. Shiki thinks very highly of Yumi and doesn't think ill of her harshness as she knows that Yumi is only hard on them all because she cares deeply about them.

Minori
Though Yumi interacts with Minori the least out of the girls, the two of them share a generally stable relationship as when Minori addressed Yumi as Gessen's "Big Sis"

Quotes

 * (When Takashi tries to feed her) "This is embarrassing, but it is a request from you, so ...a-AHH!"
 * "When I spend time with you, I lose control of myself... which is not to say I dislike it. Um, I very much adore ...our time together. And you."