I’ve beaten Yu’s Arcade Mode before so today I beat Yosuke’s.
The Arcade Mode, if you don’t skip the events, or lower the number of rounds per match (not sure if you can), takes quite some time to finish, around 40 minutes or so.
I think Yosuke is supposed to be a fast and trick character. He even has a cross-up Skill. And there is this Skill that if it hits, you can follow up with another Skill (that means another quarter-circle movement in the middle of combo that needs to be input with some precision).
I obtained a trophy for using Auto Combo 100 times. Yes, for me it’s that useful :p