The office lady, Hozui Rio, is tall and confident in her style, but she doesn't have clothes that fit well with her, even though she wants to be stylish. Her desire is always in the middle of her thoughts. As time goes by, she gradually prefers simple and neat suits for her office work. Even her makeup becomes very simple, and her hairstyle is now short hair. With her appearance, her male teammate makes fun of her for the lack of delicateness as a woman. Her bosses now consider her to be a man-like woman and often recommend drinking with her. Maybe this finally makes her give up on decorating herself as a beauty. ... But to her, there is a secret hobby she could NEVER tell her work colleagues. It's Rion at the heart of the internet cosplayer community. She makes cosplay costumes herself, and she starts to have passionate fans who like her. This is another hidden aspect of her. But a new cosplayer rival emerges. That's Kurumin! In fact, Kurumin is the sister of her other cosplayer friend. But Kurumin quickly gained popularity with her moe position in the cosplay community. Our Rion starts to have sexy matches against Kurumin at the request of cosplay fans. That competition between them started with a Cheongsam (China dress), but it will cause various exciting events. [Edited from Steam]