"I'm Seffyna, a sparkly fairy from NIJISANJI!" She came from another universe to dominate the earth, but fell in love with humanity. Now she wants to be a bright light for everyone and wishes to bring joy with her singing voice. She is accompanied by a smiling little girl named "Mechaffyna." Mechaffyna is an AI robot with advanced technology from another universe, whose voice and intelligence were taught to Seffyna. Surprisingly, she eats money!