Kaoru Daichi is Akiharu Hino's roommate, the top student of Hakureiryo Academy's High School Class 1-C (Housekeeping Course), born into a family of ninjas, and secretly a girl attending school disguised as a boy due to her father's strict conditions.
Kaoru Daichi always dresses as a boy and wraps her chest with a sarashi to conceal her true gender.
She is notably flat-chested, so much so that even when Akiharu saw her upper body, he didn’t suspect she was a girl.
Her casual clothes are few in number and quite plain, often very similar in style.
Kaoru is quiet and reserved, especially due to her rural upbringing and lack of social experience.
She is awkward in conversations, particularly nervous and overreactive around men.
Despite initially avoiding Akiharu, she gradually becomes interested in him and shows signs of jealousy and longing.
She comes from a long line of ninjas and was raised by her grandfather deep in the mountains from a young age.
Her father imposed strict expectations on her future, but Kaoru rebelled—leading to the condition that she can choose her own path only if she graduates from Hakureiryo Academy as a boy.
This is the reason for her enrollment in the Housekeeping Course while disguised as a male student.
Kaoru excels academically, proudly holding the top grade in her class.
Her athletic abilities are outstanding, surpassing the boys around her.
She is highly skilled in martial arts, demonstrated when she accidentally knocked out Shingo Todoroki during a training exercise.
Her cooking is also exceptional, making her well-rounded in both physical and domestic skills.
At first, Kaoru keeps her distance from Akiharu Hino but gradually develops feelings for him.
Her affection becomes more apparent when she gets jealous of Akiharu spending time with other girls and feels hurt that he doesn't recognize her femininity.
She confides in Mitsuru Sanke and others, eventually admitting her feelings after encouragement from others in their friend group.
During a double date, she realizes the depth of her feelings for Akiharu thanks to Mikan.
Kaoru eventually vows that she will confess her feelings to Akiharu one day.
Her upbringing in isolation makes her unfamiliar with city life and casual social interactions.
She owns very few casual outfits, all of which are described as drab and similar, leading her friends to take her shopping and help choose new clothes.
“Someday, I will definitely confess.”
“If I don’t touch them, I won’t have to feel embarrassed.”
Secret Identity and Enrollment
Kaoru enters Hakureiryo Academy Housekeeping Course posing as a boy, following her father’s unusual condition for future independence.
Her true gender is a strict secret, and she goes to great lengths such as binding her chest and maintaining a composed demeanor.
Relationship with Akiharu
She initially avoids Akiharu Hino out of nervousness and inexperience with men, but over time, she finds herself intrigued by him.
An incident during martial arts practice exposes her unease with close male contact, but through repeated training with Akiharu, she becomes more tolerant.
Growing Feelings and Confession
Kaoru’s interest in Akiharu deepens, evidenced by her jealousy and longing when he interacts with other girls.
During a double date, Mikan helps her recognize her feelings, prompting Kaoru to struggle with her emotions and finally vow to confess to Akiharu someday.
Kaoru’s extraordinary abilities and unique circumstances make her stand out at the academy, drawing the curiosity and support of her peers.
Despite her stoic facade, she is caring and committed, seeking both self-discovery and acceptance among friends.
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