Dungeon Ending: I Am the Ultimate BOSS

Ten levels. Nine copies. In the end, only my brother and I were left. She stood in front of the entrance door, refusing to go in. "Sister, no, it should be us." She raised her head, her eyes so bright, "We were ten years old when we ran out of the mountains." I was stunned, and the memories that had been dusty for many years exploded. "You lost yourself." "Then I created ten worlds and searched for them one by one." I opened my mouth but couldn't make a sound. She came over and put her hand in mine. Cold, just like mine. "Found it."