Onee-chan wa Otouto wo Wakarasetai

A college student returns home after a long day, expecting nothing more than a quiet evening. However, his younger sister is waiting for him with a determined look in her eyes. She has grown tired of his careless attitude and decides that he needs to be taught a lesson. Without hesitation, she takes control of the situation, asserting her authority in a way he never anticipated. What begins as a confrontation quickly escalates into an intimate and intense encounter between the siblings. The boundaries of their relationship are pushed as she uses her charm and assertiveness to make him understand her point of view. As the night unfolds, the power dynamics shift, leaving both of them to confront the new reality of their bond. This one-shot story explores themes of dominance, submission, and the complex emotions that arise when familial ties are tested by desire.