Tensura: The 8th Primordial

When Haru of the Minamoto dies standing after a heroic effort during the Genpai War. He is reincarnated in the world of That Time I Got Reincarnated As A Slime. As a demon??? In the Underworld??? As a bottom feeder???? Watch Haru climb the ranks of the Demon Ladder and maybe someday stand toe to toe with the monstors of the Underworld and the Cardinal World --- Just so you know, this is a original fan fiction. Not a TRANSLATION. It was inspired by the fan fiction "I'm a Daemon, so what (Tensura/Multicross)" by theogbasilisk NO GENDERBENDING NO NTR This is a slow start novel, so don't expect an MC that can one shot Guy Crimson by the 3rd Chapter. Leave reviews please.