Kasugano Shion, a third-year musical department student at Ayanagi Gakuen and Kao Council member, sports short pink hair, purple eyes, and a 168 cm stature. Known for his kind yet sensitive nature, he prioritizes others’ well-being, particularly Toma Shiki, whose unwavering loyalty he reciprocates. This bond originated in their first year when Shiki aided Shion and Masashi Irinatsu in overcoming choreography struggles, forging a collaborative dynamic that endures within the council.

Shion’s interactions with Ryo Fuyusawa simmer with tension due to Ryo’s cold opposition to Shiki’s leadership. When Ryo attempts to oust Shiki, Shion channels frustration into crafting a voodoo doll—a symbolic protest—yet maintains professional respect for Ryo’s diligence. Relationships with Chiaki Takafumi and Masashi thrive on mutual respect, though misunderstandings occasionally surface, especially regarding Chiaki’s ambiguous stance on Ryo’s maneuvers.

During his first year, Shion partnered with Masashi under the General Team, a less prestigious category than Star Teams. His fascination with tarot and fortune-telling yields occasional accurate predictions, such as foreseeing classmates’ minor accidents. Hobbies include refining fortune cookie recipes and conducting rooftop divination sessions. Academically, he excels in math and science but grapples with Japanese’s subjectivity.

Within the Kao Council, Shion oversees events like the Ayanagi Festival and contributes to projects such as the "Opening Ceremony." He champions Shiki’s vision of individuality, symbolized by their shared cherry blossom branch ritual. Musical performances like "ARCANA BRAVE" reflect his thematic ties to spring and renewal.

Prone to quick offense, Shion thrives in structured environments and meticulously styles his hair each morning. His preference for sunny, breezy weather aligns with his symbolic spring association, encapsulating a blend of compassion and eccentricity driven by loyalty and a pursuit of harmony across his social and academic spheres.