Yes, ムユ - 経典を唱え、心を育てるための小さなアシスタント is free to download, however it contains in-app purchases or subscription offerings.
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ムユ - 経典を唱え、心を育てるための小さなアシスタント has several in-app purchases/subscriptions, the average in-app price is ¥100.00.
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