Eternal Calamity: I Have a History Book That Travels Through the World Twice

After eating strange little mushrooms, strange writing began to appear in my original history book. Gradually, I discovered that this was very similar to a game I was playing called Eternity. The characters, their information, and their appearances seemed to be right in front of me. Until... They finally came to my world! ………… [Multiple heroines] + [System value improvement] + [Daily] + [Double penetration] What will life be like with the heroines of Eternal Calamity? Can they adapt to everything on Blue Star? When Gu Qinghan accidentally opened that history book, how should I survive after traveling back to the Wuji Empire? What kind of story will happen with the heroines in the place where they originally lived? …………