Also known as: ワンダルワンダリング!魔童历险王顽达
From Mangaupdates: The long-eared people has always lived harmoniously in their community. One day, a child of the fearsome round-eared people suddenly appeared in their village. Due to a misunderstanding, the child became infuriated and transformed into an adult with tremendous strength. The usually peaceful village was thrown into chaos due to the child's presence.
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