Karuizawa

Biodata

Feature	Value
Name	Karuizawa (轻井泽)
Alias(es)	Karuizawa Kei; Megumi
Gender	Female
Affiliation	Class 1-D; Yorozuya
Occupation/Role	Student; Yorozuya member; Shintō Katsuya’s fake girlfriend
First Appearance	Chapter 10

Background / History

Karuizawa previously endured severe bullying. The experience left her fearful of confrontation and led her to maintain a gyaru persona as a protective façade, despite lacking confidence beneath it. Her past also makes her particularly sensitive to signs that someone else may have been bullied. 10 19

She first approaches Shintō after noticing the scars on his chest during swimming class. When he recognizes her unusually strong reaction to bullying, she panics; he later apologizes and gives her caramel pudding. Their conversations become more frequent afterward, and she begins inviting him to eat with her. 10 11

Before becoming close to Shintō, Karuizawa had considered asking Hirata Yōsuke to act as a fake boyfriend because of his standing within Class 1-D. However, she comes to regard Shintō as more dependable due to his physical ability, gentleness, and apparent understanding of her situation. 11

Appearance

Karuizawa presents herself as a fashionable gyaru, with a deliberately conspicuous style that supports her confident public image. 10

• Honey-colored hair worn in a high ponytail. 10
• Described as having one of the cutest faces in Class 1-D. 10
• Often wears her top tied around her waist. 10
• Her usual school uniform is her preferred choice even when she worries about dressing for Shintō. 27

Personality

Karuizawa projects an assertive, fashionable, and occasionally intimidating image, such as when she attempts to borrow private points from classmates. However, this confidence breaks down when she faces threats reminiscent of her past bullying; she becomes visibly frightened, struggles to apologize, and seeks protection from Shintō. 17

Despite her insecurity, she is capable of initiative and loyalty. She joins the Yorozuya, helps secure its membership, studies diligently despite academic difficulty, distributes exam materials to Class 1-D, and insists on accompanying Shintō when she believes he may be entering a risky situation. 19 25 33 39

Her feelings toward Shintō develop alongside their staged relationship. She is easily flustered by intimacy, misreads ordinary requests as possible confessions, and privately regards their fake relationship as more meaningful than its official label suggests. 18 19 27 39

Skills & Characteristics

Social Persona

Karuizawa uses a gyaru image and her place within a friend group to avoid appearing vulnerable.

• Initially planned to rely on Hirata’s status for protection through a fake relationship. 11
• Can act haughty or forceful when under pressure, though her fear is often apparent beneath the performance. 17
• Becomes notably shy when Shintō openly treats her as his girlfriend. 38

Academic Improvement

Karuizawa begins as a struggling student but makes rapid progress through sustained study with Shintō.

• Joins study sessions and requests additional tutoring from Shintō. 21 24
• Studies intensively for roughly half a month and improves enough for Shintō to credit both her effort and his tutoring. 25
• Uses past exam papers and answer keys to assist Class 1-D before the midterms. 27 33

Yorozuya Work

As a Yorozuya member, Karuizawa participates in the club’s requests and supports its operations.

• Joins the Yorozuya as the condition for Shintō agreeing to be her fake boyfriend. 19
• Helps recruit Satō and Matsushita so the club can be formally established. 19 23
• Takes on Student Council-assigned chores and asks Shintō for more work when she needs private points. 24 38
• Supports the investigation into the suspicious electronics-store clerk and offers Shintō pudding to motivate him to continue. 44 45

Equipment / Items

• Caramel pudding — Shintō’s apology gift after he unsettles her by implying he knows about her experience with bullying. 11
• Past exam papers and answer keys — Materials she distributes to Class 1-D with Shintō’s help. 27 33

Relationships

• Shintō Katsuya — Her fake boyfriend and Yorozuya associate. She trusts him after he defends her against Class 1-C, then asks him to take the role to protect her from further bullying. Their relationship carries mutual romantic tension despite its stated premise. 17 19 38
• Satō — Close friend and fellow Yorozuya member. Satō teases Karuizawa about her feelings for Shintō and supports her choice of whom to pursue. 11 23
• Matsushita — Close friend and fellow Yorozuya member. She recognizes Karuizawa’s conflict between Hirata and Shintō, encourages her to be honest about her feelings, and helps confirm Karuizawa’s relationship to others. 11 23 24
• Hirata Yōsuke — A friend Karuizawa initially considered using as a fake boyfriend because of his status in Class 1-D. She ultimately turns to Shintō instead. 11
• Ryuen — Class 1-C’s leader, whose intimidation frightens Karuizawa during the confrontation over Rika. Shintō challenges his accusation and prevents him from using the incident against her. 18
• Sudō Ken — A Class 1-D classmate whom she supports by accompanying Shintō to hear about his possible suspension. 39

Story Role / Major Arcs

Bullying Secret and First Trust

Karuizawa visits Shintō to ask about his scars, recognizing signs that he may have been bullied. His accidental implication that he knows her secret triggers a panic response, but his apology and pudding gift establish trust between them. 10 11

Cafeteria Confrontation

After colliding with Rika from Class 1-C, Karuizawa is cornered by Rika’s friends and clings to Shintō for protection. When Ryuen arrives to press the accusation, she is too frightened to defend herself, leaving Shintō to challenge the group’s lack of evidence. 17 18

Fake Couple and Yorozuya

Karuizawa confesses that past bullying caused her to build a protective façade and asks Shintō to become her fake boyfriend. He agrees in exchange for her joining the Yorozuya; she also secures Satō and Matsushita’s participation, enabling the club’s establishment. 19 23

Midterm Preparation

She struggles to keep pace with Class 1-D’s study group but continues studying with Shintō’s help. Her improvement becomes clear before the midterms, and she later provides the class with past papers and answer keys obtained through the Yorozuya. 24 25 33

Hidden Client Investigation

When the Yorozuya receives an anonymous request concerning a suspicious electronics-store clerk, Karuizawa argues that investigating could protect the school’s girls. She accompanies Shintō during the early stages of the inquiry and remains invested in resolving the case. 44 45 47

Trivia

• Karuizawa and Shintō share similarly reckless spending habits: both recognize the value of private points but readily spend them on things they want. 38
• She refers to the Yorozuya as being similar to a private detective agency from Conan. 19
• She is easily embarrassed by direct intimacy, but becomes more assertive when she believes she is protecting Shintō. 27 39