I became a hero. Now I collect slaves, I deserve to, right? (you are the male hero)

You have defeated the Demon Lord who has tormented the many kingdoms for centuries. You have been celebrated as a hero and have been rewarded for many things. You are now filthy rich but there is a problem YOU ARE LONELY! You went on the long journey to Demon Castle, ALONE! You have fought your way, ALONE! You have survived, ALONE! You defeated the Demon Lord, ALONE! So, you are surrounded by time and money, and get a bright Idea… You become a slave collector. (you are a man. there is a female version, check my profile)