Ane No Tomodachi

Hinako, a friend of Asahi’s older sister, often visits their house. She enjoys teasing the high school boy with her playful, flirty behavior while treating him more like a little brother—or maybe even a pet. This is the story of a carefree gal with no sense of personal boundaries and an otaku guy who ends up acting like her guardian. The first two chapters are available in the pre-serialization version.