The Harbinger Seven

The Harbinger Seven is just a group of men who got either died in natural cause and being chosen or just being chosen only to those to see grey reality, and not see white & black.

These were given the powers by Lord Caelus, mainly they becoming what is known as pseudo-deities. A most rare deity class in Omni verse and only the chosen ones can become one by Him. Unlike other deities, they are unofficially part of Caelus Faction and doesn't serve him or his deities, however, they are greatly give services when they ever need them for important mission or when they are ready to fight against greater threat of the Omniverse.

Also, unlike other Gods and Goddesses giving Isekai characters of limited powers or send to another world, He just give them ompitenent powers that are unlimited and overpowered better than other Isekai characters.

They came either individual or a group to take matters of their own hand and use it to change different worlds to a better timeline rather than having main timeline continues where there will be dramatic and miserable events. They defied the thing called World Program meaning how different worlds in different universes have suffered and oppressed by tyrants and supervillains while the protagonists (also known as heroes) are delaying the inevitable. They also defied and ignores law of nature and World Program rules that affects only to different worlds (For Example, weapons, items, or artifacts that must be used by the Chosen Ones)

As pseudo-deities, they are very stronger and powerful beings in the Omni verse and they don't mess around. They dislike protagonists for some reason and it is their job to judge them if they are willing to hold the title of being hero. If not, they'll take them out without mercy once the group leader give the verdict of his judgement. They can even kill both mortals and immortals easily without hesitation, this included of dealing with Gods and Demigods from different universes.