Mei Yoneme, a second-year Yuigaoka Girls’ High student born October 29 under Scorpio, stands 155 cm with blood type A. Her quiet nature belies a striking appearance—fiery red hair swept into a side bun and piercing blue eyes, once mistaken for intimidation due to childhood nearsightedness. This misconception cast her as a delinquent among peers, fostering self-doubt that drove her to avoid idol activities she secretly admired.

Initially joining Yuigaoka to discreetly observe Liella!, Mei’s hidden fervor caught the group’s attention, leading to an invitation to join. Early interactions revealed a sharp, guarded demeanor masking shyness and fear of rejection. Through Liella!, she slowly shed her defensive sarcasm, adopting a serene, earnest tone during performances.

Shiki Wakana, her steadfast friend since middle school, anchored Mei through emotional struggles. Her growth propelled her to assume the School Idol Club presidency post-Chisato Arashi’s graduation, showcasing newfound confidence. As a pianist, she collaborates with Kanon Shibuya on compositions, blending technical skill with creative synergy.

In Liella!’s rock-focused subunit CatChu!, Mei embodies feline aesthetics while balancing roles as the "Conflicted" philosopher and "melancholic" temperament, merging shy introspection with a tsundere edge. Favorites like blueberries, soufflé, and parfaits mirror her layered persona.

Her journey traces a transformative arc from hesitant spectator to decisive leader, confronting insecurities to embrace vulnerability and collective identity. This evolution underscores her integration into Liella!, marking her transition into an unflinching participant and guiding force.