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Protagonist Rio’s childhood friend Yuuna likes cosplay, though she tries to keep it as hidden as possible. One day she makes him cosplay as a girl, forcing a girl’s school uniform and a wig onto him. She even makes him wear some make-up. After that she forces him to go home like that without being found out, under the guise that she wants to proof that it’s the perfect crossdressing cosplay.

However, Rio’s true identify is discovered right away by his classmate Nene, a selfish rich girl. Nene then uses this opportunity to turn the 2 of them into her “servants”, telling them that if they won’t do it she would reveal Rio’s “secret” about crossdressing. Leaving Rio and Yuuna no other choice but to accept.