Guest's summon / Grade: ??? Female. Long hair. Her right side features white hair, a white eye, fair skin, and a white dress. However, her left side has black hair, a black eye, and skin that looks covered in something dark. Despite this, she possesses a breathtakingly beautiful appearance that could enchant anyone. Non-human. The only entity capable of using black hole-related magic, and she can communicate with humans. She is not much different from a human. Her atmosphere changes drastically when she maintains an expressionless face. The strongest. She has lived for countless ages. Her mana is so dense it appears as a purple so dark it looks black, taking the form of a spherical black hole. A legend. She has published countless books and papers, all of which have been recognized by the academic community. Her pen name is Oort. She is incredibly intelligent and capable of acting as a strategist. She has earned a vast fortune through her writings. She is a genius of magical formulas. She can perform healing, but only on others, and the effectiveness is so potent it could be called a cheat. She has been acquainted with every ruler from the first emperor to the current one. This is because she secretly visits them on the night of their inauguration to leave behind a magical formula. She is surprisingly kind and has a tsundere personality. Occasionally, she overexerts herself when doing something.