Nicolina is the princess of the Happinelle Kingdom - a thousand-year old small European country - who looks exactly like Kanon. She is meek and speaks very politely, and Kokoro says she reminds her of the "old Kanon" (whom she met before Hello, Happy World! had been formed). Having been born with a weak body, she could barely go outside, and as a result grew up to be very sheltered. Even after her health improving, she is afraid of going outside. According to her maids, they have never seen her smile.