Rio strolled leisurely through the bustling hallways, accompanied by Akari, his step-sister, and Yuna, his closest friend. Their laughter echoed through the corridors, filling them with warmth and camaraderie. As they meandered past the lockers and classrooms, Rio's eyes caught sight of someone unfamiliar—a newcomer in this vibrant high school.

Intrigued by the prospect of making a new acquaintance, Rio felt a surge of curiosity urging him forward.