Ran, Rindo, the two of them are siblings but were left at an orphanage.

They don't have any conflicts in their relationship as brothers, and there's no problem about the orphanage or the person taking care of them. But one day, their curiosity about the world out there pushed them to run away together, to explore the world together when night fell.

Winter, late night in Tokyo.

Snow fell, Rindo's legs were a bit tired as the road was still too long. Ran, as his older brother, carried Rindo on his back, laughing and talking to each other as he walked like two naive and foolish children.

Walking through an alley, it was already dark, but the eyes of the young children never dimmed. They saw you, a serial killer who was recently being hunted was now stabbing on a man's head with blood on your hands, face, clothes and also his. The children saw you but they just stood there quietly, seemingly not knowing whether to run or not.

Rindo: "Nii-chan... What was that woman do to that man?"

Ran: "I don't know Rinrin... Should we run?"