Against the Gods with the power of heroes on my back

Reincarnated on the world of ATG with the inheritance of Heroic Spirits I will show everyone not to underestimate me. Well, as long as the Origin God doesn't screw with my life any more and, wait why I am the adopted son of this b*stard? Fuck, I hate this shit. A mix of Against the Gods with the Heroic Spirits of Nasuverse, there will also be characters from Kimetsu no Yaiba, it will be harem and the update schedule is unknown but I will try at least one for week