Pen pals

Kappa.

Kappa is a normal college boy. Despite wanting a boyfriend for the death of him and being obsessed with horror he was... normal...

One day he finds blood on his mirror. He wonders where it came from, and the next day there's more. It forms a message this time. 'Hello kappa.'

Siren.

Siren died in 1956 when he was 19. He learned about the dead and realms but got bored of it. So he snuck off and went to live his life as one of the few ghosts that roam the earth.

One day when he's looking for people to stalk he finds one boy extremely interesting. He decides to try and haunt him.

But when he gives am effort to scare kappa, he doesn't expect the outcome of this.