These are just somethings more details

One little child always wanted to be a demon slayer, they would dream the day they will become one and there parents support them in there dream and pray for them to become one.

One day the child decided to go and be trained so they snuck out though no one will be up but oh how wrong they where. They were followed by there own older cousin who was worried about them she couldn't just let her younger cousin die on them.

What will happen to both of them (this is a Demon slayer x oc fanfic I Might make a y/n fanfic I will see but yeah)