He doesn't encounter any demons until Feita, which is when he becomes Infinity Sword
Talk:Sheath Knight
From Elwiki
I forgot about this until just now, but the translation of this path's backstory first mentions Conwell absorbing Demonic Energy (Conwell staining black) when fighting the demons of Feita, meaning it couldn't have been absorbing demonic energy before the events of Feita.
i rewrote it. comparing the path videos of sword knight and sheath knight, sheath knight has noticebly more darker pupils. either it lighting or shadows i will just put it as unknown.
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