My little sister: Prologue

Visual novel premise

My little sister: Prologue is a PC visual novel about Suhan, a high school student who wants to get along with his younger sister, Sunmi. After seeing his friend Jinyong get along with his own sister, Suhan receives a small stone that can change past events.

Changing the past

You use the stone to alter unpleasant memories Suhan shares with Sunmi. Those changes affect their present relationship, and Suhan becomes increasingly absorbed in revising the past. His actions don't always lead to good results, and what happens depends greatly on when he stops traveling through time.