1 Crossover story

since I was little my family was killed and I was looking for revenge and I bumped to a demon I was shoked and the demon was about to attack me when I suddenly passed out

When I woke up I saw blood and a katana.

the slayer was about to attack me when suddenly I portal showed then I saw a woman crying then she called the doctor they were shoked then I fainted

then they go to somewhere the woman said ''Y/n I was worried you got into a car crash"

few years later my parents said they will move to korea and work there one day I saw blood then I turned into a demon a pretty one

when I was sleeping I heard a voice

"hey woman'' do you still want to live

and I woke up I saw a man he said your my wife now I said why would I be I-I don't even know you ) then you grew fangs the man said ryomen sakuna that's my name