User blog comment:B214/Question and Answers 6/@comment-2607:FB90:2B65:F6D:849D:C9C8:262F:BFD2-20200129195814/@comment-24595619-20200130021623

Covering Gram in one of the holy demonic swords was actually a basic thing. He came up with another method to lessen the curse using his holy demon sword to instead absorb the demonic power using its holy power to enhance the latter.