Record of Ragnarok: Why was Buddha's backstory altered?

Buddha's backstory in Record of Ragnarok has been altered from its original backstory. Let's look at the reasons why it has been changed.

Watch Record of Ragnarok

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Record of Ragnarok) Which is stronger, Eyes Of Enlightment (Bhudda) or Eyes of the Lord (Adam)? - Quora

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Record of Ragnarok: Why was Buddha's backstory altered?

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Wasn't Buddha underwhelming in battle power compared to his initial hype in Shuumatsu no Valkyrie: Record of Ragnarok? - Quora