Things had been going well for Chihiro, she had managed to stand up for herself and clear her name regarding the missing money from the school, and had gotten closer and closer to her crush, Minato.
But she couldn’t stop thinking about her reaction to when Mitsuru offered to invite him to her room to sort it out for her. It made her feel angry, sad, and scared all at once but even so that wasn’t Mitsuru’s fault so she thought she owed her an explanation. But in the end she couldn’t face her without getting flustered thinking about her and Minato alone, so she decided to leave and cool down then explain herself later.
All that ended up doing was giving her more time to think about the possibility of the two of them hitting it off with each other. And it’s not just Mitsuru she had to worry about there was Yukari, Fuuka, and Aigis as well.
One day during school she had stumbled upon a strange device, that she had playfully aimed at them as a little joke, what she didn’t expect was that the strange device ended up being a real shrink ray that hit the group of girls.
Her first instinct was to help them get back to normal, but her more darker thoughts started to creep in, goading her to get rid of them to take this opportunity to keep Minato all to herself. Giving into these darker desires she decided to grab them and put them Into her shoes to deal with later once she gets home.
She’s prepared to crush them but she liked the feeling of them struggling at her feet it made her feel powerful, so she decides to keep them alive to pamper her feet, shrinking them even more whenever she felt they were slacking.