——That day.
The boy who fell into the devil's abyss hugged the person in front of him who had the same face as him.
Sweet and crazy sounds echo in the dark "home" (black box).
"Brother."
"You said we were twins, so we were originally the same person."
"Brother is also a part of me, right? Then, brother - you will be willing to give up 'you' to me for me, right?"
"——Do you think so?"
The silver light of the knife is cold.
The cursed twins, the boy who lives next to death, the detective who pursues the truth.
Demon, swamp, fog, reality. Everything you are looking for is here.
In the black box, the demon butterfly emerged.
[This article is a yandere article, 1v1, slightly bloody, ghostly and yandere attack]