This is Clownpiece's theme from Touhou 15: Legacy of Lunatic Kingdom
Do moondwellers usually only have single names? Clownpiece is a fairy so it makes sense, but for the final boss to only have a first name is pretty weird.
Regardless, I kinda love this theme. The soundtrack I think is pretty underwhelming which is a shame, but I really enjoy Clownpiece's theme, along with Seiren's.
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