Travel Through Time and Become the Strongest in Another World

The powerful monster that was born in the era of the Demon King was besieged by the Seven Kingdoms and was forced to travel to the new world. "I heard that the ninth level of powerful magic can teleport through space." "Is this it?" Jane snapped her fingers. A black door slowly appeared in front of me... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.