DEAR MY しすたぁ

I remember me, Haruka, Hiromi-senpai, Kouhei, and my younger sister, Mari, all playing together... until a horrible incident drastically changed our lives: the death of my sister, Mari. My father wanted to bring Mari back to life and so he created a new Mari. A life no different than before. The same conversation as before. But something inside me changed little by little. [Edited from DLsite]