The Life Infusion

A Erba's eyes were throbbing. He could sense that something was not going well. The few people around him were emitting such powerful auras which he had not expected. 

In any case, he was about to face the greatest difficulty now. He could not return to the demonic plane even if he wanted to. 

In its descent, the demonic plane had consumed too much energy. To reopen the plane's passage, he needed to lead his subordinates into devouring a large amount of life force from this world. Only then could he cast the spell. 

Initially, he did not think that it would be a difficult task. Yet, it seemed to be the case now. The legion suffered a destructive blow as soon as it appeared. There were so many human powerhouses to fight against currently. They needed to retreat and consolidate the life force to replenish themselves before they could reopen the plane's passage. 

This world was truly terrifying.