Start by Binding the Holy Maiden System

The intense tug-of-war ultimately forged a deep bond with them. Empowered by the strength of these beautiful girls, Gu Beichen bravely returns to the original world, confronting the enchantress/demoness. - - - Gu Beichen is a transmigrater whose body and soul have been tortured by an evil witch to the brink of death, when a mysterious system finally awakened. He will embark on a journey through myriad worlds. In each realm , he meets beautiful women, and after dramatic struggles, eventually forming close bonds with them. With the help of his female companions, Gu Beichen will bravely return to the original world to confront the witch.