Yeah, it's better explained in the actual chapter, since this is a snippet from a conversation in progress. But this "Silver" is a copy of Silver Yoshida that Yoshida animates to figure out how he failed. The idea being that two heads are better than one. What Silver *finds*, of course, is more than Yoshida bargained for.
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Those who fear the darkness have never seen what the light can do.
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Those who fear the darkness have never seen what the light can do.