Yui Kotegawa — To Love-Ru
Interesting factsYui Kotegawa BiographyThe story, the personality, and everything in between.Read biographyClose biography
Yui Kotegawa古手川 唯
Sainan High School student, disciplinary committee member, and recurring romantic-comedy heroine
Yui Kotegawa joins the cast of To Love-Ru when Rito Yuuki reaches his second year at Sainan High School. As a disciplinary committee member, she takes school rules seriously and is particularly quick to challenge the uproar surrounding Rito and the alien princess Lala. Her blunt reprimands, often punctuated by the cry “Harenchi!”
(“How indecent!”), can make her seem forbidding. Yet her fondness for cats, concern for classmates, and growing ability to reconsider a first impression show how much more there is to Yui than her stern exterior.
Yui Kotegawa Biography
Joining the class—and challenging its chaos
Yui makes her manga debut in chapter 49, just as Rito and his classmates enter their second year at Sainan High. She is a straightforward, serious student who treats the school’s unruly atmosphere as a problem that should be addressed, not something everyone must simply accept.
She runs for class representative but wins only two votes, tying with Lala. The result is a sharp reminder that confidence in her principles does not automatically win classmates over. Yui subsequently works as a member of the disciplinary committee, an outlet for her resolve to challenge rule-breaking even when an older student or an intimidating troublemaker is involved.
Rito makes her rethink a first impression
Rito seems to be at the center of one mortifying mishap after another, so Yui repeatedly suspects him of behaving improperly. Lala’s inventions only strengthen that impression. Yui reacts sharply, sometimes before hearing the explanation, because she expects people to respect one another’s boundaries.
As Yui sees more of Rito’s instinct to help others, her certainty becomes harder to sustain. She does not stop objecting to embarrassing situations, but she begins to separate his intentions from the accidents that follow him. That uncomfortable change in judgment gradually affects the way she treats him.
A softer side, especially around cats
Away from school inspections, Yui has an unmistakable weakness for cats. Cat-themed belongings fill her room, and her concern for animals sits naturally beside her tendency to help people who need defending. She is also capable of being thoughtful toward children and older people, though she is far less comfortable being noticed for her kindness.
Her severity can leave her isolated from the very classmates she wants to protect. Haruna’s gentleness and Rito’s concern give her opportunities to rethink that distance. Yui remains stubborn, but learning to look beyond an awkward incident makes her less likely to confuse an earnest person with a troublemaker.
Still principled in To Love-Ru Darkness
The continuation To Love-Ru Darkness keeps Yui in Rito’s school circle while placing its larger science-fiction conflicts elsewhere. She is still the student most likely to object to an outrageous scene, but her private embarrassment and closeness to her classmates become increasingly visible.
Unlike some of the aliens around her, Yui has no extraordinary abilities to fall back on. She confronts bizarre technology and impossible misunderstandings with the same tools she uses in ordinary school life: persistence, blunt honesty, and an insistence that actions should have consequences.
Yui Kotegawa Personality
Yui is sincere, proud, and strikingly direct. She is willing to confront a rule-breaker regardless of their popularity, yet she can become so certain she is right that she fails to notice how harshly she sounds. Her characteristic “Harenchi!” is an indignant reaction to behavior she finds indecent, and the intensity of the protest is often part of the joke.
Her composure is much less secure when her own feelings are involved. She is easily flustered by teasing, dislikes having her private emotions exposed, and sometimes answers with a sharper rebuke than she intended. The official publisher’s description calls her serious and tsundere; neither label cancels out the fact that she often acts out of genuine concern.
Yui’s better judgments come when she pauses long enough to see someone else’s intentions. She can put herself at risk when challenging bullies, offer quiet kindness to a vulnerable person, or worry about an animal in need. Her development does not mean abandoning standards: it means applying them with more understanding.
Yui Kotegawa Appearance
Yui has long, straight black hair with bangs parted above her left eye and warm golden-brown eyes. She often wears a serious, narrowed expression, which changes dramatically when someone catches her off guard. Her look is well documented by the official anime character designs.
Her familiar Sainan High uniform includes a white blouse, a pale yellow sweater vest, a green bow, and a green plaid skirt. The anime’s official character sheet shows the hairstyle and outfit from multiple views and with different expressions; individual illustrated outfits may vary.
Quick facts
- Full name
- Yui Kotegawa (古手川 唯)
- Japanese name reading
- Kotegawa Yui (こてがわ ゆい)
- Series
- To Love-Ru; To Love-Ru Darkness
- Species
- Human
- School
- Sainan High School
- School year
- Second-year student during her principal story appearances
- School role
- Disciplinary committee member
- Manga debut
- To Love-Ru, chapter 49
- Birthday
- May 3
- Age
- 16 during the second school year (reference-profile figure)
- Height
- 162 cm (reference-profile figure)
- Hair
- Long, straight black hair
- Eyes
- Golden to brown-gold in illustrated depictions
- Japanese anime voice
- Kaori Nazuka
- Older brother
- Yū (Yuu) Kotegawa
- Father’s occupation
- Lawyer
- Favorite animals
- Cats
Abilities
Disciplinary committee work
Challenges students who break rules, takes responsibility for school order, and persists even when the person she confronts is intimidating.
Limitations: Her uncompromising manner can isolate her and does not guarantee that others will cooperate.
Courage in confronting misconduct
Speaks up when she believes someone is behaving unfairly, even when doing so exposes her to trouble.
Limitations: Her resolve sometimes leads her into confrontations she cannot safely settle alone.
Relationships
Rito Yuuki
Classmate; complicated romantic interest
At first, Yui views Rito as the center of constant school disorder. His efforts to help others gradually complicate that judgment, although she remains quick to reprimand him.
Lala Satalin Deviluke
Classmate; source of frequent friction
Lala’s exuberant personality and unpredictable inventions challenge Yui’s preference for ordinary school rules. Their different temperaments do not prevent Yui from becoming more integrated with the group.
Haruna Sairenji
Classmate; friendly peer
Haruna’s gentle nature provides a calmer contrast to Yui’s strictness, and her concern helps Yui become less socially isolated.
Yū Kotegawa
Older brother
Her relaxed, teasing brother enjoys bringing up Rito, which routinely embarrasses Yui. His playful manner differs sharply from her own, but he also looks out for her.
Celine
Younger companion; affectionate bond
Celine responds warmly to Yui, giving the usually severe student an opportunity to show patience and affection.
Mikan Yuuki
Rito’s younger sister; acquaintance
Rito’s younger sister belongs to the wider group of people Yui encounters through him; Mikan’s observant, self-possessed manner contrasts with Yui’s embarrassment.
Momo Belia Deviluke
School acquaintance; contrasting outlook
Lala’s younger sister takes a much more calculating approach to romance than Yui, who prefers propriety and straightforward behavior.
Interesting facts
Yui first appears when the original manga reaches chapter 49, alongside the class’s move into its second year.
She arrives after the main school relationships are already established, giving the existing group a new critic rather than starting out as part of it.
Her bedroom is decorated with cat-themed items.
The specific furnishings make her love of cats visible even when she tries to hide her softer interests at school.
She does not limit her reprimands to students her own age; she also challenges older troublemakers.
Her insistence on fair conduct can put her in difficult situations because she refuses to back down merely when someone seems intimidating.
The official To Love-Ru Darkness 2nd character-design sheet presents Yui’s hairstyle and expressions from several angles.
It offers a production reference for her long black hair, golden-brown eyes, and recognizable school uniform.
Shueisha’s official To Love-Ru Darkness character list describes her as both “serious” and “tsundere.”
This pairing captures how blunt disapproval can coexist with strong emotions she dislikes showing.
Yui is not a confident swimmer and is described as relying on a swim ring.
This small weakness provides a specific contrast to her otherwise forceful attitude; it is reported in secondary character coverage.
Frequently asked questions
Who is Yui Kotegawa in To Love-Ru?
She is a Sainan High School student and disciplinary committee member known for her strong principles, strict manners, and unexpectedly caring nature.
Is Yui Kotegawa human?
Yes. She is an ordinary human schoolgirl in a story that also features aliens and extraordinary technology.
Does Yui have powers?
No special supernatural or combat powers are established for her. Her strengths are resolve, diligence, moral courage, and growing empathy.
Why is Yui always scolding Rito?
She sees him caught in repeated embarrassing mishaps and initially assumes he is careless about school propriety; her assessment becomes more sympathetic as she gets to know him.
Does Yui like cats?
Yes. Cats are among her clearest personal interests, contrasting with her stern public demeanor.
What does “Harenchi” mean when Yui says it?
It is a Japanese exclamation for behavior she finds indecent or improper, often rendered in English as “How shameless!” or “Indecent!”
Who voices Yui Kotegawa in Japanese?
Kaori Nazuka voices Yui in the Japanese anime.
Is To Love-Ru Darkness a different Yui?
It is a continuation of the original manga’s setting, not a separate reboot of her identity; adaptation and game-only scenes should still be distinguished from the manga.
When does Yui first appear in the manga?
Her first appearance is reported as chapter 49 of the original To Love-Ru manga.
What makes Yui different from other To Love-Ru characters?
She repeatedly questions the disorder that other students treat as normal, while her concealed warmth and embarrassment add another layer to the comedy.
Story spoilers for the original To Love-Ru manga and its direct sequel, To Love-Ru Darkness, follow. The general profile above avoids major later revelations.
Rito’s protective side changes her view
When Yui challenges a group of local troublemakers, Rito intervenes to protect her. Seeing him act for her sake forces her to reconsider the negative assumptions she had made about him and helps turn reluctant respect into attraction.
Yui’s growing affection is difficult for her to admit, especially in front of classmates and her teasing older brother Yū. She even gives Rito a cat-shaped Valentine’s chocolate, but her words and behavior continue to pull in opposite directions.
A childhood connection to a rescued kitten
A later Darkness story brings back Yui’s memory of trying to rescue a kitten when she was younger. She eventually recognizes Rito as the boy involved in that childhood encounter, adding a new dimension to the kindness she has come to recognize in him.
This recognition deepens her feelings, but it does not amount to a completed romantic relationship or a definitive resolution of the series’ broader romantic entanglements.
Family, Celine, and an imagined future
Her brother Yū recognizes that something has changed in her feelings for Rito and teases her about it. Yui also grows attached to Celine, and when a passerby mistakes Yui, Rito, and Celine for a family, she begins privately imagining what such a future might be like.
These scenes are presented as Yui’s feelings and imagination, not a marriage or child that actually occurs in the primary manga continuity. Her difficulty saying what she feels remains an important part of her character.
Discipline work and the sequel’s unresolved romance
Later in Darkness, Nana helps with disciplinary duties and Yui invites her to join the committee. Nana subsequently works alongside her, even wearing a committee armband. It is a more collaborative arrangement than Yui’s earlier, often solitary attempts to police the school.
In the sequel’s concluding storyline, Haruna and Rito acknowledge their mutual feelings, but Rito hesitates to take their relationship further until he has addressed Lala’s feelings and those of others around him. The ending does not establish Yui and Rito as an exclusive couple or married partners; Yui’s place in that unresolved wider romance remains open.
Additional story facts
In the childhood kitten incident, Yui’s severe demeanor had already made it difficult for her to get help from other children.
That earlier isolation helps explain why the identity of the person who did help stays so important to her.
The Valentine’s chocolate Yui prepares for Rito is shaped like a cat.
The gift connects two aspects of her character—her love of cats and her difficulty expressing affection directly—through a concrete story detail.
Nana eventually wears a disciplinary committee armband while working with Yui.
The uniform accessory makes their later partnership visible rather than leaving it as a passing comment about school duties.
Spoiler questions
Does Yui Kotegawa fall in love with Rito?
Yes. Her initial disapproval gradually develops into romantic affection, even though she struggles to acknowledge it openly.
Did Yui and Rito meet as children?
The Darkness storyline reveals a childhood encounter connected to rescuing a kitten.
Do Yui and Rito get married in the manga?
No confirmed marriage between Yui and Rito is established in the original manga or Darkness. Scenes imagining them as a family are Yui’s fantasies, not actual outcomes.
Does Yui ever openly confess to Rito?
Yui has difficulty speaking openly about her feelings, and the published conclusion does not establish her as Rito’s girlfriend or exclusive partner.
Does Yui work with Nana in Darkness?
Yes. After Nana helps with disciplinary duties, Yui invites her to join the committee; the two later work together.
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Yui Kotegawa Images
Browse artwork featuring Yui Kotegawa, recognizable by her long black hair, golden-brown eyes, and Sainan High uniform, alongside her character biography.
