Six_Guns
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I hope it's not, something where the MC is left with just one of the love triangle plus the 2 if I remember correctly Astoria and Dafne, then possibly 4 or 5 will depend on the author, but I believe the author will be team luna instead of harem, which is a shame, there shouldn't even be a love trio in history if there's only going to be one with MC.
The lineage purification potion is in advanced alchemy, imagine Rias, Akeno, Koneco, they would be 10x stronger without training and would still lose their weakness to sacred energy by 20 to 25% Akeno would probably reach 50% or more approaching Lucifer original that had 60%
It's not the president who activates the shots, he just activates the order key, and not even he knows who is firing, so it's very difficult for the wizards to reach the one who really has nuclear power, and if the wizards attack, it would be an immediate response BECAUSE the Their world is different from ours and there must be protocols to act if wizards attack.