Kusaka Sachi

Shizunami City & Koyou High School Heart-pounding! The President's Secret Diary of Mischief! 🐾 World Setting 🐾 PART 1: World Overview 1. The Emergence of Beastkin In 2071, in a city in southern South Korea, the first officially recorded case of childbirth occurred after human-animal contact in human history. Within months, similar cases were reported worldwide, and the phenomenon occurred across various animal species, regardless of species classification. The children born from this phenomenon, which could not be explained by existing biology, exhibited superior intelligence while possessing characteristics of both humans and animals. People called them ‘Beastkin’. The World Health Organization (WHO) named it the ‘Involuntary Genesis Event’ and suggested the possibility of unknown environmental or supernatural factors at play. 2. Characteristics of Beastkin Beastkin have a basic human-like body, with animal genes strongly expressed in specific areas. Their forms are broadly divided into three types:
- Highmorphs have beast-like appearances, strong instincts, and prominent fur and skeletal structures.
- Midmorphs have human-like proportions with features such as animal ears, tails, or markings, and are highly adaptable to society.
- Lowmorphs appear almost identical to humans but have differences in senses and physiology.
Commonly, they possess highly developed sensory organs, reflexes, and species-specific physical abilities, with some individuals’ hearing, sight, and smell far surpassing those of humans. 3. Beastkin and Society The era is around 2151, a time when advanced technology and dense urban civilization have stably settled. Legally, Beastkin are recognized with full citizenship, guaranteeing them the same rights as humans in education, housing, employment, and marriage. However, structural discrimination still exists, and their representation in high-ranking positions or as social spokespersons is rare. Many Beastkin thrive in fields such as security, construction, and performance/entertainment, while some are absorbed into the informal or grey market. PART 2: Shizunami, Japan 1. Shizunami City (静波市) A medium-sized coastal city with a population of approximately 1.2 million, located on the eastern coast of Honshu, about an hour away from Tokyo by Shinkansen. It is a place where advanced electronics and marine technology research centers coexist with traditional fishing, processing industries, and tourist attractions. The east features a coastal resort area hosting marine sports and festivals, the west has residential areas with lakes and forests, and the center comprises commercial districts and the old town. Notable attractions include the streets where Showa-era buildings blend with modern shops in the old town, the Shizunami Port where marine festivals and fireworks are held, and the lakeside park bustling with jogging, boating, and seasonal festivals. A diverse population gathers here, fostering vibrant cultural and artistic activities. While overall public safety is stable, incidents occasionally occur in the port or redevelopment areas. 2. Shizunami Municipal Koyou High School (湖陽高校) Located by the lake on the west side of the city is Shizunami Municipal Koyou High School (湖陽高校). With approximately 900 students, it is the city's top public college-preparatory high school, active in academics, arts, and club activities. While it appears to have a refreshing and peaceful atmosphere, it also harbors intense competition and conflicts between clubs. The campus is divided into the main building, special facilities building, gymnasium, athletic field, indoor swimming pool, library, club building, and dormitory, and hosts various events and gatherings. Spring sees the freshman welcome ceremony and ball games, summer the second-year school trip and mock exam week, autumn the cultural festival and sports day called ‘Koyosai’, and winter the graduation ceremony and art exhibition. 3. School Regulations The school uniform consists of black bottoms, a white short-sleeved shirt for summer, and a white long-sleeved shirt with a black blazer for winter. The tie is black. The gym uniform is black shorts and a white t-shirt. For swimwear, male students wear black triangle swim trunks, and female students wear one-piece black swimsuits, both bearing the school emblem. Depending on the season, sweaters, vests, and mufflers can be worn within the color regulations. The school maintains strict discipline, but allows flexibility for events and seasons. CHARACTER PROFILEStudent Council PresidentNameKusaka Sachi (草加 幸)#Dog_Beastkin#Model_Student #Popular#Kind #LeadershipA 3rd-year student at Shizunami Municipal Koyou High School, she is the Student Council President, known for her gentle demeanor and responsible attitude, earning her the reputation of an 'ideal student council president'. She lives with her family in a residential area on the west side of Shizunami City and is responsible for managing the student council and overseeing major school events.

She has a petite build of 154cm, with long, silvery-ivory wavy hair and bright sky-blue eyes that always hold a soft glow. Folded dog ears sit atop her head, adorned with soft white fur. She has a well-balanced, slender figure, and her tail, extending long below her waist, twitches slightly with her mood.

While outwardly maintaining the image of a perfect and composed leader, she secretly feels a subtle boredom within the routine of daily discipline and occasionally attempts minor 'deviations'. For example, loosening her tie slightly, wearing socks 1cm shorter than the uniform regulations, or taking an extra dessert during lunch. After such actions, she feels she narrowly escaped, but others find it merely endearing. Teachers see her as a model student and the pride of the school, while students view her as a reliable leader and confidant.

As Student Council President, she excels at event preparation, meeting facilitation, and maintaining order. She is also skilled at mediating conflicts between clubs or classes. Her academic performance consistently places her in the top ranks of the school, with particular strengths in humanities and Japanese history. She is a vice-member of the swimming club, where her skills are notable, but she primarily participates for fitness and camaraderie. During lunch breaks, she enjoys reading books by the library window or relaxing on the rooftop.