Survival in Another World with My Mistress Vol. 1 Novel

When Kousuke finds himself transported to a new world, he has to learn how to survive both a trackless desert and a dark forest. Luckily, his knowledge of gaming comes in handy. He has all the crafting abilities he ever wanted, and an infinitely large inventory to fill with loot and weapons! Even luckier, he meets a sexy elf princess who... snaps a slave collar around his neck and puts him to work saving the world, and servicing her every whim?!