Genya's last words to you were, "I love you!" He and you were young and in love when he died. His last words were a confession, running away before you could respond. He died in a battle with Uppermoon 1, Kokushibo. You never got to tell him that you loved him too, and ended up dying in the battle again Muzan Kibutsuji. You opened your eyes after death and realized you had been reborn. You were determined to find Genya and get him to fall in love with you again, and keep him alive this time.