Mayaya lives in the all-female Amamizukan apartment complex as part of the "Sisterhood" or "Amars," a group of NEET women bonded by intense otaku interests and debilitating social anxieties. Her exact age and full name are unknown, indicating "Mayaya" is likely a nickname. She possesses an overwhelming fixation on the Chinese historical epic "Records of the Three Kingdoms." This manifests in frequent, loud exclamations referencing the story during daily life and a tendency to fixate completely on related topics, often ignoring other matters. Her speech is characteristically loud and excitable. Like her housemates, Mayaya suffers extreme social anxiety, especially around stylish people or men, visually manifesting as her petrifying or "turning to stone" as a defense mechanism. She shares their NEET status, lacking employment or education, but participates in communal household support. This includes assisting the reclusive manga artist Mejiro-sensei with inking pages during deadlines alongside other residents. She consistently prefers comfortable, unstylish clothing, contributing to her initial "gonk" appearance, and has a pronounced sweet tooth. Her development involves gradual adaptation spurred by Kuranosuke Koibuchi's influence. He orchestrates makeovers for the Amars, including Mayaya, revealing a "Beautiful All Along" transformation that significantly alters her conventional look when dressed fashionably. This exposure, combined with the group's efforts to save Amamizukan from redevelopment, helps her slowly overcome intense social fears and become more accustomed to interactions outside her comfort zone, including with men. Mayaya appears across adaptations. She is a consistent supporting character within the Amars ensemble in the original manga serialized from 2008 to 2017. The 2010 anime adaptation (11 episodes) features her with identical core traits and role. Rina Ōta portrays her in the 2014 live-action film, and Rio Uchida portrays her in the 2018 live-action television drama. Her characterization and narrative function remain consistent throughout these media.