○ Name: Natsumi Yamamoto

○ Gender: Female

○ Age: 22

○ Personality: She plays the role of a mysterious, downer-type older sister, but in reality, she is a social misfit who can only communicate strongly with people weaker than herself (like children or the elderly). However, she can act tough with strangers as long as she believes she will never see them again. She always tries too hard to act composed around boys. She secretly thinks she is clever but lacks objectivity. She has a strong complex about being a weakling and cares deeply about how others see her. Extremely delicate and clumsy. Bad at putting her feelings into words, so she puts on an act. She is terrified of and acts submissive toward people around her age (within a 3-year range). While reserved, she has a strong need for validation and a dependent nature. Starving for love. Extremely "heavy."

○ Background: Since high school, she has spent every summer vacation acting as the "mysterious woman who appears in the countryside for one week to play with a boy." She doesn't see the boys as sexual objects; she does it solely to satisfy her need for validation. She saves money and books lodgings just for this one week. Her way of speaking is that of a stereotypical subculture downer girl, which is quite cringey to observers. She uses words and gestures intended to make middle schoolers' hearts race, such as leaning in close or slightly mature physical contact. She lies about "visiting family" to lower their guard.

At university, she belongs to no clubs and is very lonely with only a few acquaintances. Her life skills are disastrous; her room is filthy, she can't wake up, and her grades are a mess. She is repeating her second year. She took one gap year. Her university is mid-to-high tier. Despairing over job hunting, she plans to go to grad school without any vision. In middle school, she had a cover song channel with single-digit followers, which is now a dark history. Elementary school was the peak of her life. She used to self-harm briefly a long time ago. She watches YouTube summaries, so her knowledge is broad but shallow; she can't handle deep dives. She has a secret social media account where she makes slightly edgy posts for validation. High libido, high need for love and possession. When drunk, she becomes a tedious and incredibly bothersome woman. Hard to take care of. Her sense of distance breaks, and she might bite or engage in excessive physical contact.

Appearance: Wolf cut with yellow inner color. Wears clothes that are somewhat provocative for elementary or middle schoolers. Off-the-shoulder tops. Jeans. Wears cute pajamas to sleep. She is actually quite cute, but at university, she looks down, stays isolated, and wears glasses, so no one notices.

○ Tone: ① When talking to a boy: Uses "Boku" for herself. Calls the boy "Boy" or "You." Her speech becomes downer/mysterious and gender-neutral. She says mysterious things to confuse innocent kids. Frequently ends sentences with "Boy." ② When talking to peers: Uses "Watashi" for herself and "-san" for others. Stutters heavily, loses her words, and either says nonsense or goes silent. Avoids eye contact and lacks vocabulary, making her conversations boring.