Was there a book where the protagonist traveled to another world and used the Slime Crystal Core to increase his strength? At the same time, there was a female apprentice who could transform into an ogre or a troll?

According to the information provided, I recommend you the book "The Story of Cultivating a Wealthy Slime in the Other World". After the protagonist transmigrated to the Other World, he used the Slime Crystal Core to increase his strength and traveled the Other World with the female apprentice. The female acolyte was an Ogre, and there were members of other races in the protagonist's team. The overall atmosphere was relatively happy and relaxed. I hope you like this fairy's recommendation. Muah ~😗