Mika Inoue is a wealthy Japanese woman known for her traditional attire. Summoned to her son's school alongside two other mothers due to behavioral concerns raised by teacher Tomimatsu-sensei, Mika faces accusations of excessive pampering leading to her son's lack of motivation and tendency to quit when challenged.

Her elegant and flawless exterior masks contrasting masochistic tendencies. During what the mothers believe is a parent-teacher conference, they are instead led under false pretenses to an abandoned building. There, Mika is subjected to punitive discipline intended for her son, administered by individuals justifying it as retribution for her parenting approach.

Her wealth is a shared trait among the three mothers, with the implication that their affluence has contributed to their children's perceived entitlement and lack of perseverance. Mika's background and personal traits emerge through her reactions and interactions during this specific disciplinary event.