A younger sister barges into her brother's room to look for money that was stolen from the family vault. Only to find her otaku brother used that money to buy a figure. The figure is taken away from him and in her increasing power trip he's forced to do extra chores for his deeds. Lucky for him his secret won't get out.

While cleaning the bathroom, his sister forcible bathes with him under the guise that they need to save money after he used it to buy a figure. After forcing her brother to put his body in a tense situation where one's bodily autonomy takes over the rational mind. She then tells him to come to her room in 3 hours to get the figure back.

Once in the room, the sister reveals to be wearing a costume of the figure (Furare-chan). The sister reveals that she hated his otaku-ism and just wanted him to love her (yes in that way). And sexual intimacy occurs. Despite all this the brother thinks she's doing this to reveal her secret love of cosplaying (not the case). The last page reveals she dresses up for him again and this intimate relationship continues.