Yuzuki Seo is a lively and unpredictable high school girl from Monthly Girls' Nozaki-kun. She is a member of class 2-A and part of the choir club, known for her unexpectedly beautiful singing voice. Despite her tomboyish, rough behavior and lack of social awareness, she is genuine and caring toward friends, even if her kindness doesn't always land perfectly. Yuzuki often helps out in sports thanks to her strength and athleticism but tends to play by her own rules. Her outward appearance seems wild, often wearing her uniform loosely and even going barefoot in shoes. Loved by her older brother and respected by some, she leaves a memorable impact on everyone she meets. Her unique mix of honesty, rowdiness, and hidden talent makes her both frustrating and lovable.
Yuzuki Seo stands at 163 cm tall.
She is known for having the largest bust among the main female characters.
Her looks are rated high, following Mikoto Mikoshiba and Yuu Kashima.
Seo often wears her school uniform in a sloppy way and likes punk-style, flashy clothes.
She is usually seen wearing shoes without socks.
Her hair is usually styled simply, but for choir contests, she lets it down and dresses up neatly.
Yuzuki is easy-going, reckless, and rough.
She often acts without thinking, struggles to read social cues, and sometimes upsets people.
Despite this, she genuinely tries to care for others, even if she does it in awkward ways.
She is straightforward, saying whatever is on her mind, regardless of what others might feel.
Seo is brave and energetic, loves moving around, and gets excited about new things.
Despite her tough way of speaking and acting, she sometimes does kind things for her friends.
She calls herself “considerate,” but in reality, she is totally clueless about how others feel.
Because of this, even someone as relaxed as Umetarou Nozaki finds her hard to deal with.
She is bold enough to give her umbrella to Chiyo Sakura on a rainy day or buy presents for Hirotaka Wakamatsu, but still gets on her friends’ nerves now and then.
Yuzuki’s birthday is July 7 (the star festival in Japan), and she is a Cancer by sign.
Her blood type is B.
She is classmates with Chiyo Sakura in class 2-A; they became friends simply because their attendance numbers were close.
She has an older brother, Ryosuke Seo, who is a college student.
Her family consists of her father, mother, and older brother.
Seo is good friends with both Chiyo and Yuu Kashima. They are often seen hanging out as a trio.
Her brother Ryosuke is a responsible person with many friends, the complete opposite in personality.
He worries about Seo causing trouble for people but understands her well and cares deeply for her.
Seo is amazingly athletic and can even walk on her hands.
She often gets asked to help out various sports clubs, but only joins for fun or if she feels like it.
Her physical strength and mental toughness make her a good asset when teams need a mood boost.
However, she is notorious for being selfish while playing sports, breaking rules without care, and making wild passes and shots that her teammates can’t handle.
Because of this, coaches use her as a “bad example” for team players to learn from.
Seo’s real talent shines in singing. She is in the choir club, and her singing voice is beautiful and pure, a huge contrast to her rough personality.
At contests, she behaves differently, becoming quiet and focused, earning her the nickname “Mermaid of the Roman Academy” from other schools.
Yuzuki Seo is close to her older brother, Ryosuke Seo, and respects him, partly because he buys tasty treats for her.
She became friends with Chiyo Sakura because they were seated near each other and stayed friends through shared experiences at school.
She is friends with Yuu Kashima, making up the group of three girls often seen together.
Seo has a unique relationship with Hirotaka Wakamatsu, calling him “Waka” and looking after him in her own way.
She misunderstands his protests as affection and drags him to movies or amusement parks.
Seo keeps her identity as the famous “Lorelai” (her nickname as the choir club songstress) a secret from Wakamatsu, even though he admires Lorelai and doesn’t know it’s really Seo.
She buys souvenirs just for Wakamatsu and even sits on his lap during movies, which confuses him and blurs the boundaries of their relationship.
Surprisingly, Seo becomes embarrassed or flustered when Wakamatsu says romantic things, showing she is not good at dealing with romance.
- Birthday: July 7
- Blood type: B
- Height: 163 cm
- Club: Choir
- Hobby: Being active, hanging out with friends, fighting games at game centers, tactical and action video games at home
- Good at: Singing and all sports
- Bad at: Group activities, reading the room (social cues)
- Clothing style: Punk-inspired, flashy “gyaru” fashion
- Family: Dad, Mom, Older Brother (Ryosuke Seo)
- Likes: People who are funny
- Favorite food: Sushi, yakitori
- Dislikes: Pink fish flakes (sakura denbu), edible chrysanthemums, decorative foods
- Best subjects: Math, history (world and Japanese)
- Weakest subject: Japanese language
- Elective: Music
- Bust size: Large
- Weekend activity: Goes outside for anything
- "It's better if you stay quiet, right? That way, they can keep dreaming."
- "…Well, I'll break that dream myself, though."
School Life and Classmates
Yuzuki Seo is a classmate and friend of Chiyo Sakura.
Because of their close attendance numbers, they became friends.
She is also friends with Yuu Kashima, and they are often seen spending time together as a girl group of three.
Her Personality at School
Seo stands out as both athletic and wild.
She always breaks the rules in any sport, playing selfishly and sometimes even intentionally breaking them.
Her wild actions are often used as lessons for other students on what not to do.
Despite her rough behavior, she sometimes shows considerate acts, like sharing her umbrella or giving thoughtful gifts.
Role in the Choir Club
Although her usual self is rough and chaotic, Seo’s singing voice is stunningly beautiful.
In the choir club, she is called “The Lorelai of the Choir Club” because her singing catches everyone by surprise.
During contests, she lets down her hair, dresses well, and becomes quiet and serious, making her seem mysterious to other schools.
She is also called “The Mermaid of Roman Academy,” adding to her legend.
Relationship with Wakamatsu
Seo cares for Hirotaka Wakamatsu, feeling that he looks up to her, so she wants to take care of him.
She misreads his complaints as affection and takes him out on trips, such as going to the movies or amusement parks together.
Wakamatsu secretly admires “Lorelai,” not knowing that Seo is the real Lorelai.
Seo keeps this secret until chapter 124, when Wakamatsu finally learns the truth.
Afterward, Wakamatsu gets confused, torn between treating her as his respected Lorelai or as “Seo-senpai.”
Seo worries that this might ruin their close relationship, but, if anything, it brings them even closer.
She even practices singing new songs in secret to fulfill Wakamatsu’s requests, revealing her hard-working side.
Unique Traits and Backstory
Originally, the creator considered making Seo bad at singing but having her voice be relaxing only to Wakamatsu, but this idea was changed.
Seo’s character is meant to be a jumble of boyish and girlish traits.
In the story, her brother even says she is like an elementary school boy.
- Seo’s actions confuse those around her, but once people understand her, she can build good friendships.
- She stands out with her wild looks, big heart, and even bigger voice.
- Despite getting on people’s nerves sometimes, she is a loyal friend who tries hard in her own way.
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