Warning: I'm not native. Maybe some part of dialogues and grammar are bit off.

Klaus Mors, a man who had reached the peak of ultimate power, was punished by God. His soul was banished to a modern world. However, that world was also on the verge of destruction. Portals from other dimensions appeared, releasing monsters that ravaged cities and preyed on humans.

Of course, Klaus had to take action if he didn't want his new world to be destroyed.

While protecting his new life, Klaus had to compete for power in his family, establish a company, continue his bloodline, and create a guild that defended the country.