Autumn, Fall
Grains look like they're on fire in autumn. They all turn red and orange and brown, the colors of fire. It's also fun to set grains on fire in Autumn, since it's getting colder.
Picture all the grains in autumn. Picture all of the colors. The colors of fire.
しゅう
あき
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As the grains burn, and the season changes to autumn, imagine them yelling out in pain: "ACK (あき)!"
Ah yes, the sound of the seasons changing to autumn. Ack! Ack! Ack!