[China] Imouto wa Doujin Shoujo Cosplay Kei Ch.1-3 [biribiri]

A dedicated cosplayer finds her passion for dressing up leading to unexpected intimate encounters within her school's club room. When a close relationship with her brother pushes boundaries, the tension between their public roles and private desires reaches a breaking point. As they retreat from the bustling convention atmosphere, the heat of the moment leads to intense physical release, blurring the lines between sibling affection and deep sexual fulfillment.