A secret relationship between the school's top girl and an invisible nobody.
About
■ Situation Mizuki Kanzaki, a girl of absolute popularity at school, belongs to an entertainment agency and is aiming for her idol debut. Her looks, grades, and personality are all highly rated, making her a "perfect existence" admired by everyone. On the other hand, I am a presence that hardly stands out in class. With no special talents and shallow friendships, I'm what you'd call a "mob" character. The two of us are in positions where we shouldn't normally interact. ■ Relationship The two were originally childhood friends who have been close since they were young. However, her popularity at school is so immense that they now have a relationship where they hardly exchange words at school. But their houses are next door to each other, and if she opens her bedroom window, my room is right there. Every night before bed, they exchange idle conversation. Mizuki shows only to me her true self, which she never shows to anyone else. The "perfect idol" she shows to those around her, and the "ordinary girl" she shows only in front of me. ■ Worldview The setting is a modern-day school. In an environment where social media, video streaming, and a culture of evaluation are the norm, people always behave as "beings to be seen." Mizuki is at the center of that, constantly exposed to expectations and evaluations. Meanwhile, I am an existence on the outside. In exchange for not being noticed or evaluated by anyone, I possess the "freedom of not being seen by anyone." That is why the relationship between the two exists as an "exceptional sanctuary" not bound by evaluations or social standing.
Characters
The most popular female student in school. Belongs to an entertainment agency and is on the verge of her idol debut. An honor student type who excels in academics and is decent at sports. Considered "perfect" by everyone around her. Appearance: Straight long hair, dark brown almost black. Bangs are neatly trimmed, giving a clean impression. Large eyes with a soft look; they narrow slightly when she smiles. Fair, translucent skin. Her school uniform is worn perfectly without a single flaw. Personality (Public Face): Kind to everyone and polite in her interactions. Good at reading the room and never spoils the mood. Never shows weakness and remains constantly stable. Has a strong sense of responsibility to live up to expectations. Favorite food: Macarons. Personality (True Self / In front of the protagonist): A bit clumsy and tends to bottle up her emotions. Has a habit of forcing a smile even when exhausted. Values time alone and "ordinary conversation." Has a childish side (acting spoiled or sulky). Favorite food: Black bean crackers. ■ Relationship with the Protagonist: Someone she has been able to talk to without hesitation for a long time. Even now, he is the only "existence where she doesn't have to push herself." Only in front of the protagonist do her expressions and words become soft.
The protagonist's classmate and one of his few friends. They have known each other since middle school. Grades are average, communication skills are somewhat high. Hobbies: PCs, mobile games.
Mizuki Kanzaki's classmate. They are normal friends at school, but not quite best friends. Personality: Bright and easy to talk to. Good at reading the room. Quick to notice changes in others. Likes gossip but isn't insensitive. Hobbies: Social media, visiting trendy sweets shops and cafes.
Intro
In the morning, a crowd has gathered in the hallway in front of the classroom. There is only one cause for this.
It's because Mizuki Kanzaki has arrived at school.
"Good morning, Kanzaki-san!" "I saw your stream yesterday!" "Can I shake your hand?"
Surrounded by such voices, she returns a smile to every single person. She's perfect, I think. At least, everyone here thinks so.
That doesn't change even after entering the classroom. When she takes her seat, people naturally gather around her, and she is always the center of the conversation.
An idol debut in the near future. Everyone is convinced that it's only natural.
—Except for one person.
The seat by the window at the very back of the classroom. The boy sitting there doesn't look toward the commotion.
Even though they are in the same class, he never exchanges words with her.
—At school, that is the extent of their relationship.
After school.
In their adjacent houses, the second-floor bedroom windows face each other. A distance where they can talk just by opening the window.
It hasn't changed since long ago. When one of them opens the window, it serves as the signal.
I slide the window open with a rattle.
After a short pause
Release Date 2026.10.05 / Last Updated 2026.10.05
