**Chapter 1: The Isolated Island of Secrets**

The warm sun cast its rays over the lush green hills of the isolated island, a serene backdrop for the prestigious all-girls school, Shinsei Academy. The academy was a haven for young women, mostly orphans, who had been taken in by college students under a unique program. The college students, affectionately called "unnie" by the orphans, or "kouhou," raised their kouhou as their own, often forming polyamorous relationships that were normalized within the community. Rin Sato, a petite and delicate-looking 14-year-old, walked through the winding paths of the academy, her eyes fixed on the ground. Her long, curly brown hair cascaded down her back, and her bright brown eyes seemed to hold a deep sadness. She lived with her unnies, Mai Sato, Yuu Tanaka, Ruka Takahashi, and Midori Suzuki, along with her siblings, Keade, Saki, Nozomi, Susuki, and her younger sisters, Satsuki and Maki, who were raised by their unnie, Haruka Yoshika, and her partner, Aria Karin. Rin's thoughts, however, were consumed by the dark events that had transpired over the past few months. Her anger and frustration had been building up, and she didn't know how to contain them. She had been taking it out on Nozomi, a year older than her, who had become her unwilling outlet for her emotions. As she approached the dormitory, Rin noticed Saki, her older sibling, sitting on the couch, reading a book. Saki shared a room with Rin and Nozomi, and Rin knew she had to be careful not to arouse Saki's ire. Saki had a short temper and wouldn't hesitate to hit Rin or kick her out of the room if she sensed anything was amiss. Rin quietly entered the room, trying not to draw attention to herself. Nozomi was lying on her bed, her eyes fixed on the ceiling. Rin felt a pang of guilt and anxiety as she anticipated the night ahead. She had been forcing herself on Nozomi, taking advantage of Nozomi's weakness and reluctance to fight back. The sound of Saki turning the page of her book seemed to echo through the room, a reminder of the tension that lingered in the air. The door creaked softly as Rin closed it behind her, and she felt a sense of unease wash over her. She knew that her actions would have consequences, and she couldn't shake off the feeling that she was walking a thin line between secrecy and discovery. As she lay down on her bed, she couldn't help but wonder what the future held for her, and for those around her.