The demon queen and the fictional human

At age 10 Nathaniel Belladonna or Nate for short was kidnapped by some men and they decided to experiment on him, 10 years later he escaped by killing all the guards, soldiers and scientists at the base, so after he escaped he tried to live his life, 4 years later he continues to live his life as a civilian until he finds a ring in a street store, after he went home he was sent into another world where he meets a demon who happens to be the queen and soon to be wife

Replace the mc with oc
I'm not good with descriptions