Aneppoi no -my sister, like sister-

Mutsumi Natsukage, or Mutsu-nee for short, is my cousin who's "like an older sister, but not my older sister" and she's a university student. She's freeloading with us because it's convenient for her commute. Anyway, Mutsu-nee and I are close and her skinship is relentless. She comes over to my room every night to play, and with her shapely legs and arms carelessly on display, I just don't know where to look. One day, Mutsu-nee scooted over to mess with me while I was studying, and startled by her pleasant scent, I panicked and shouted at her. She has stopped coming over to play in my room since then. At around the same time, I also began to see her happily fiddling with her phone, and she also started letting her hair down, which she usually kept tied up. I asked Mutsu-nee if she found herself a boyfriend... to which she only gave me vague replies. I lost my cool and dragged her to my room, and pushed her down on my bed. The thought of her being taken away by another man after all this time, when I've kept her company up until now is just... I let my true feelings for Mutsu-nee, who will end up leaving for somewhere, spill out while I was unable to get my emotions in order... (Source: FANZA)