The rumored herbicide makes its appearance in the forbidden verification series.
Its weapon-class power is such that a huge tree falls down in seconds after being sprayed.
A video showing an entire bamboo grove withered was displayed as an advertisement, so I purchased it myself to verify its actual effectiveness.

My book, "Use That Elixir Now," written by me, Uemura, is available on Amazon.
https://www.amazon.co.jp/dp/4863062087

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[Uemura's X (former Twitter)]
Twitter: manager_yone