Hyperlight Blade

Question, if Master Yi is the Hyperlight blade, what's up with the "trace lost" on his memory trace? Also,what in the fuck does Yasuo's memory corrupting and not trusting him have to do with Mastery Yi? Because everyone knows they are not connected by lore AT ALL, they would have to REWRITE lore, and no one is going to let them do that.

Now, I'm not saying it's Yone, but it has to be SOMETHING special