Cinnamon Sekine is a VOCALOID character from the VOCALOID4 Library and is part of the 'Vocaloid China Project.' She is known for her energetic and cheerful personality, often depicted as a lively and positive girl who brings warmth to her group. Cinnamon Sekine’s role in the series is as one of the Chinese VOCALOIDs, designed to sing in Mandarin Chinese. Her unique voice and distinct design have made her a favorite among VOCALOID fans worldwide.