I am a Peerless Hero without equal! (WC/Currently in FGO Part 1)

A Waifu Catalog is a special Choose Your Own Adventure. It depicts an all-powerful interdimensional slaving Company where you are signed on as a Contractor who is obligated to travel the vast infinities and complete missions, and along the way maybe enslave locals through various means and sell them back to the Company for Credits and/or Tickets. With the Catalog you can also buy people.

This does not mean you have to engage in slavery. You don't have to engage in mind control.