Serapeum is a native of the planet Mars, and a member of the Seven Shus, bearing the title of "Union". The Seven Shu are an Langqiu Organization first formed hundreds of years ago, a legendary group that is said to have saved the world a century prior. Quiet, pure girl who wants to help others and enjoys reading books. Always looks calm and almost sleepy. Calls Lantern, Songque, Thelema and Ajita(deceased) as sisters.