is this the part when he tried to retrieve the sword? do you mean no longer pure as in he's evil?? or like because…
because he is clouded with hatred rn with his thirst for vengeance that's why the sword won't yield to him for now because the one who wields it should have the heart to protect and not for revenge.
This is what I have understood from that statement.
"...So this is my curse...my heart is no longer pure..."ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ˜ðŸ’”💔💔💔💔💔💔💔💔💔💔💔💔💔💔💔💔💔💔💔
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This is what I have understood from that statement.
He said it himself that he will enter the drama crew in July in live today.
The ones that was spread by the source for May filming is his guest appearance in The Blood of Youth's prequel.