Chapter 13 — Find the Stake

Daichi is gone.

The rules remain.

On their first school day without him in Okinawa, Riku and Sara try to follow the systems he left behind: phones charged, location visible, notebook packed, no one alone. But school brings a different kind of danger — one Sara cannot cut down and Riku cannot solve by reacting first.

When Airi sets a quiet social trap, Riku sees part of the pattern.

Only part.

His mistake pulls Sara into trouble and teaches him that being almost right is not enough when someone else controls the story.

In a world of rumors, witnesses, and hidden pressure, Riku has to learn what Sara already knows from snares:

Do not just find the rope.