June 12 (UPI) -- South Korean girl group Le Sserafim performs the theme song for the upcoming stop-motion animated series My Melody & Kuromi in a trailer released Wednesday. The K-pop group's song "Kawaii" will introduce each episode of the upcoming series featuring Sanrio characters My Melody and Kuromi. "I was really captivated by the adorable world of Mariland! The characters' expressions were very rich and entertaining to watch," group member Hong Eunchae said in a press release . My Melody