Yuu used "Boku"「僕」and "Kimi"「君」when she was still cross-dressing and uses "Watashi"「私」and "Anata" 「あなた」(“Anta”「アンタ」when she’s angry) after her gender was revealed.

Actually dislike the fact she has to go through high school for the second time.

Yuu is a very independent and hard worker which is why she often refuses help from the others.

The way Yuu speaks is polite but can be very sarcastic, and even being mean to others.

Yuu has huge interest on astronomy and gardening. She is also very familiar with nature, plants, and animals.

Yuu's singing voice isn’t the best one that Azul made fun of her once (R Azul School Uniform’s home voice), though her voice sounds calming and some people find it comfortable to listen to her singing voice.

Sometimes Yuu doesn't have a shadow or doesn't reflect on the mirror for a few moments, but she doesn't realize this.

Yuu doesn't join any club because she only wants to work at Mystery Shop.

Yuu has around shoulder-length black hair and eyes slanted upwards (tsurime) with blue eyes.

She has feminine face and above average that people find her beautiful and cute at the same time.

At first, Yuu crossdressed as a guy until a certain point when her gender was revealed in front of everyone.

When Yuu was cross-dressing, she uses sarashi (chest binder) and clothes 2 sizes bigger to hide her body figure. She has to do that since she has distinct feminine body lines and big breasts. Sometimes she asks Grim to pull her sarashi to be as tight as possible. She wears the right size after she starts wearing female uniform.

The uniform, when Yuu was still cross-dressing, consists male uniform that 2 sizes bigger than her body with her blazer is all buttoned up, she wears a necktie, and her shoes is a worn up sneakers. She styled her hair into men's half-up bun style.

The uniform after Yuu stopped cross-dressing consists of a white shirt, gray vest, unbuttoned blazer, necktie, pleated skirt with length right above her knees, thigh-high socks, stripped ribbon on right arms, black gloves, and loafer shoes. Her summer uniform consists of a short-sleeved white shirt, gray vest, necktie, pleated skirt with thigh-length, ankle-length socks, stripped ribbon on right arms, and loafer shoes.

After Yuu starts wearing female clothes, she does her hair into various styles for different occasions; hair down for uniform, ponytail for gym, low pigtails for lab coat, and low twin braids for ceremony robe.

She's actually an adult woman but her body was reverted to a 16 years old girl.

She was working in the environmental service field, which made her familiar with nature.

When the ghosts asked her if she has a lover, she didn't give any decent answer. But her face turned bright red.

Her family consists of a father and a big brother.

She actually has someone she likes in her previous world. He was her senpai in college.

Before transported to Twisted Wonderland, she came from Durarara!! universe. She is friends with my persona/yumenushi (I do self-shipping with Heiwajima Shizuo).

Sometimes Yuu doesn't have a shadow or doesn't reflect on the mirror for a few moments. It's because Yuu’s being isn't completely in Twisted Wonderland. Even she doesn't realize this.

Yuu committed incest with his big brother. She had sex with him many times since when she was 16 years old. At first, she didn't know that was sex and when she finally knows about sex, it was already too late.

Yuu met her crush when she went to college and he was the one who stopped Yuu's big brother.

Even after that, Yuu still didn't confess to her crush due to various reasons.

Right before Yuu transported to Twisted Wonderland, she got into an accident and her crush tried to protect her. This resulted in Yuu fell into a coma in her original world. Unfortunately, her crush ended up dead.

Yuu's crush confessed to her before his last breath and it turns out he was already in love with her long before Yuu started talking to him.

The only thing Yuu doesn't remember is the accident and the fact her crush already died. She also doesn't have any idea that she fell into a coma in her original world.