Desc: Erosion: Directed by Toowa2. With Akie, Chika Arakawa, Kentarô Furuyama, Aki Hiraoka. A tribe communicating by the sound lived in the forest. It requires good relationship with the "PLAYER" to communicate by tone. MIYABI and MIKA were treated coldly from KITE, the leader of the tribe because of not to handle "PLAYER" well. One day, KAROUJA comes to the forest. He knew a convenient way more than tone. MIYABI is influenced by his ability and she left with him. After that, MIKA could communicate with LUMINA, who played the most beautiful tones in the tribe. One day, MIYABI comes back to the forest. She could communicate without "PLAYER". MIYABI tries to spread this to the tribe. Gradually LUMINA and KITE become isolated in the tribe. Tribe people also begin to change, and they begin to disappear. MIYABI and her PLAYER left in the tribe set out again with it.