@Creamdoom it is, and pretty openly, it mocks all isekai tropes (if you check there's a parody of at least half a dozen other stories mixed in). The world they ended basically runs on Isekai (not only they summon people, people reincarnate into it, they are attacked by people from other dimension/realities) that's the whole joke. No even the MCs are free from it. The guy's a terrible power (he has no compulsion about not using it), and the chick awakened a bloodline plus spirit guide.