A Shadow Yu, huh? …Yeeeeah, not gonna lie, that would be kind of a problem.
A Shadow-Sensei!? Y-Yikes! We’d all be doomed! Nobody can beat Sensei!!
A Persona User’s Shadow is said to be extraordinarily powerful… We would have to come up with a strong tactic in order to match its power. And taking into consideration that it would likely also have all of his abilities, intelligence and memories, it might be difficult to find a strategy it wouldn’t be able to counter.