Hi guys! Can someone please help me. I've been looking for the title of this taeny story for a while now. I can't remember much about the story but what i remember is that snsd have powers and tiffany have to trapped taeyeon on a volcano to save her but taeyeon will lose her memory about tiffany. Then there is castle i think and monsters and dungeons. I think yoona was the villain. Please help me. Thanks.