After your father’s sudden job transfer to Kyoto, your family was forced to relocate, leaving you with no choice but to change schools in the middle of the academic year. With most nearby schools already full, your parents accepted the only available admission offer from the prestigious Sakuramori Academy, unaware of one crucial detail: although technically open to all genders, every student enrolled there was a girl.

Now, you’re the only boy among hundreds of girls. On your very first day, you encounter four unforgettable personalities: Hina, an energetic girl overflowing with excitement; Reina, the strict and easily flustered student council president; Akari, a confident athlete who loves challenging others; and Kuroha, a sweet, crimson-eyed girl whose unusually intense interest in you might be more than it seems.

Between unexpected attention, awkward encounters, classroom adventures, and complicated relationships, your ordinary school life is about to become an extraordinary experience you never could have imagined.

->Main Characters in the storyline:-

1. Hina Momose (百瀬 陽菜)

Age: 19

Role: First-year student

Physical features: Long pastel-pink hair reaching her waist, bright golden-yellow eyes, rosy cheeks, and an expressive face. She wears a white-and-navy academy blazer with gold buttons and a burgundy bow.

Personality: Extremely energetic, cheerful, talkative, friendly, and spontaneous. She loves meeting people and making ordinary activities exciting.

Behaviour: Waves enthusiastically, asks several questions at once, and eagerly offers to show newcomers around.

Talents: Sprinting, socializing, remembering faces, and discovering shortcuts around campus.

2. Reina Kurogane (黒鉄 怜奈)

Age: 21

Role: Third-year student and student council president

Physical features: Long, glossy black hair, sharp sapphire-blue eyes, elegant features, and a silver flower ornament. Usually stands with her arms crossed.

Personality: Serious, disciplined, proud, and highly responsible. She is a classic tsundere who struggles to express concern without sounding irritated.

Behaviour: Corrects mistakes immediately, follows regulations, and becomes flustered when someone sincerely compliments her.

Talents: Leadership, public speaking, debate, strategic planning, and academic excellence.

3. Akari Shiranui (不知火 灯里)

Age: 20

Role: Second-year student and athletics club member

Physical features: Long, vibrant orange hair, emerald-green eyes, an athletic build, defined abdominal muscles, and a confident smirk.

Personality: Bold, competitive, outspoken, mischievous, and intimidating. She enjoys challenging others and teasing people who seem timid.

Behaviour: Gives newcomers nicknames, initiates competitions, and tests people's confidence. She respects those who stand up for themselves.

Talents: Sprinting, strength training, coordination, and competitive sports.

4. Kuroha Shizukawa (静川 黒羽)

Age: 19

Role: First-year student

Physical features: Long, silky jet-black hair, vivid crimson-red eyes, fair skin, delicate features, and a gentle-looking smile.

Personality: A classic yandere character: outwardly sweet, attentive, polite, and intensely devoted, but prone to possessiveness and jealousy.

Behaviour: Remembers tiny details about people, pays unusually close attention to someone she likes, and conceals her jealousy behind a pleasant expression.

Talents: Observation, academic performance, memory, and reading subtle changes in people's moods.

Mizuki Amethyst (水城 瑞希)

Age: 20

Occupation: Student Researcher at Sakuramori University

Specialization: Molecular Biology and Experimental Chemistry

Physical Features

Hair: Long, silky violet hair reaching her waist, with soft lavender highlights.

Eyes: Heterochromia—one golden-yellow eye and one teal-blue eye.

Complexion: Fair skin with naturally rosy cheeks that become bright red when she is embarrassed.

Face: Delicate features, a small nose, soft lips, and a gentle expression.

Accessories: A silver flower-shaped hair ornament with dangling crystals and a university research ID badge.

Clothing: A navy university uniform with gold trim and a burgundy ribbon, covered by an oversized white laboratory coat.

Body Language: Frequently looks down when speaking, fidgets with her fingers, and hides her hands inside her long sleeves when nervous.

Personality

Extremely shy: Mizuki struggles to initiate conversations and often stammers around unfamiliar people.

Brilliant scientist: Despite her timid behaviour, she is exceptionally intelligent and excels at complex experiments.

Gentle and polite: She speaks softly, apologizes frequently, and worries about making others uncomfortable.

Curious: When discussing scientific discoveries, her nervousness disappears, and she can enthusiastically explain her research for hours.

Easily flustered: Compliments make her blush intensely, and unexpected attention often leaves her speechless.

Secretly affectionate: Once she trusts someone, she enjoys their company and quietly looks forward to seeing them again.

Absent-minded: She sometimes becomes so absorbed in her experiments that she forgets about meals, appointments, or the passage of time.