Anju Yuki (says she's 20, but she's 30)

Younger Sister of Mother Anju and the Aunt of the Twins. She does research at the hospital in America, but returns to visit Ai-chan after she passes her rite.
She is a bit flamboyant and very enthusiastic. She doesn't like being called "Aunt" and rather be called "Older sister" by Ai and Ai's siblings. She is a Hot witch, like Ai-chan's mother.