One night, as they were getting ready for bed, Rina came into Akira's room and started making jokes about her body. Akira tried to brush it off, but Rina just laughed and said she was "just trying to help" Akira develop her own sense of self.
It wasn't until Akira stumbled upon one of Rina's video recordings - titled "Perverted Big Sister.mp4" - that she realized just how far her sister's behavior had gone. The video showed Rina... experimenting with her own desires, using Akira as a prop. Perverted Big Sister.mp4
As the days went by, Akira found herself growing more and more uncomfortable around her sister. Rina would make comments about her appearance, or touch her in ways that felt too familiar, too intimate. And when Akira tried to talk to her about it, Rina just shrugged and said she was being "too sensitive". One night, as they were getting ready for