Diva NS Yoonji has always been known for her overly cutesy concepts, but that's all about to change with her latest comeback teaser! Decked in leather and spikes, NS Yoonji proves she's made a dramatic image transformation with her teaser music video for "The Reason I Became a Witch". If her teaser image released just hours ago is any indication, the teaser is a full blown realization that NS Yoonji is no longer a pretty lady dressed in frills. Her full album, "NEO SPIRIT", will be released on January 5th. Check out her teaser below!