 If you liked
Kouchuu Ouja Mushiking: Mori no Tami no Densetsu
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 ...then you might like
Battle Spirits: Shounen Toppa Bashin
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Although the genres of these shows are quite different, they also had a lot in common.
Both shows had strong focus on parent/child relationships.
Bashin and J have aesthetic similarities to Popo and Soma, respectively. Soma and J have story arcs that are very similar as well.