Monster (Arifuerta X Tensura)

Disclaimer: I do not own Tensura or Arifuerta, they belong to Fuze and Ryo Shirakome respectively. Also this (or at least Rimiru's backstory here) is heavily inspired by @Aestetics "singularity" fic. Go read it, it may not have the best writing, but hey it's fun to read. Cover is not mine.
After Tempest is reduced to ashes by a whim of velgrynd Rimiru ends up on a downward spiral destroying nearly all of the eastern empire, killing nearly all of class S when they get in his way and try to stop him. After Decimating nearly 3/4 of the empire he was found and killed by Chloe.
After his death he awoke, back in Japan in the body of a female infant who "coincidentally" received the same name. Little did he know he wouldn't be able to process his trauma with a normal human life as he is thrown into a new world of fantasy with chaotic events following around two students Hajime Nagumo, And Kouki Amonogawa.