The forest became a siren. Matsumoto wrote his book, and when he did that, Aokigahara on the shores of Lake Sai became the Suicide Forest. Matsumoto sounded the first note in a song that is still singing out to people, still drawing broken, hurting people to take their own lives in that Sea of Trees. And the world is filled with sirens. There’s always a siren, singing you to shipwreck.