Evil Emperor Plane Romance

The protagonist becomes a disciple of the evil master. After getting the ring that can be exchanged for anything, travel through all the planes. Beauty? Is essential. Main character? Must be invincible. Enemy? It's for torture. The protagonist of this book does not know the word "low-key". It is stupid to keep a low-key even though he has absolute strength. He pretends to be a pig and eats the tiger. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.