In a Different World, I Have Nine God-Level Sisters

The male protagonist traveled to an unknown time, and the system gave him nine sisters. The eldest sister is the princess of the dynasty, the second sister is the master of the ghost island, the third sister is the leader of the shadow department, the fourth sister is the miracle doctor of Linggu, The fifth sister is the richest man in the world, the sixth sister is the leader of the Sword Alliance, the seventh sister is the emperor of the Sky Kingdom, and the eighth sister is the Immortal Xianyun. Ninth Sister is the most mysterious. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.