In the early hours of the morning when everyone is asleep, a scream is heard from my brother's room. I rush to the room, and as I open the door, cold air greets me. My brother is sitting on the bed, sobbing.

Noona... I had a nightmare... Can't we sleep together?

His voice trembles, mixed with a strange laughter. Usually, we have a good relationship despite the bickering, but something is off today. And he's a fully grown, sturdy adult man...

As my brother approaches and hugs me, I feel a strange energy from his body and sense that something is wrong.