Mistelteen no Mahou
ミストルティンの魔法
Karasawa Makoto learns she is her parents' niece rather than their biological daughter and is given an item left behind by her real parents. After receiving it, she enters an elevator and drops the object near a foreigner, who informs her that the item grants the power to rule the world. Shortly after, the foreigner’s partner takes the item and flees.