"The World Union's Ultimate Plan" 

"Maybe some of them could give us advice on how to fix the broken seal without using the souls of foreign beings." 

The world union had already offended too many transmigrators. 

What if the relatives of these people in their original world could somehow trace their souls to this world to avenge them? 

Now that the wormholes have appeared, even if it was only a one-way path from their world to the outside world and not vice versa, there were chances that such accidents might happen because of their blatant massacre. 

It was not an ordinary massacre because after the victims died, they even tortured their souls, using those souls as fuel to create the abyss seal. 

Such a cruel means to hold the abyss seal... 

Once the relatives of these people knew, they could find a way to get revenge even across worlds and dimensions.