Yuria

Yuria was first introduced during the Olympia Arc. Contrary to many English translations Yuria is not Kaito sister as this is a common mistranslation. She is Kaito childhood friend or more likely lovers. She was the container of Lucifuge—the No. 3i Demon until recently when Kaito used the power of his overwhelming love for her to subdue the demon and remove it from her body. (Source: Wikipedia)