I Became the Genius Bastard of a Noble Dark Clan - Ch. 24

[MangaDex]

 

[ARealCoolGuy]

Quite enjoying this one so far, but I'm confused - is the mage empire, or dark lands, or wherever he is, and whatever family he's reincarnated into, are they the villains who destroyed the world the first time? Because it doesn't seem like he fought with them, but against them.