Wear the Book: Dress up as a Super Villain! Torture the Protagonist

This book is also called "With millions of soldiers, you want me to hand over power?" He traveled through the book and became a prince in a fantasy novel, with millions of soldiers and horses and countless trump cards. The emperor asked him to hand over his military power, so he handed over millions of troops? My life is like walking on thin ice! A single disagreement will destroy the country! Thousands of souls are rising! Let me show you what it means to have great power! What does it mean to have millions of soldiers and horses in hand and do whatever you want!