As it appears, my level 125 Angelic Buster was able to complete the questline and get the Chair and other bonuses (yay free hair change).
The werid thing is, my level 142 Dual Blade can't do the Replay quests, they're completely BLANK. I was able to get the level 20 to 60 equipment boxes, and trying to clear with the red button brins out an error.
I really want that extra equip slots and other nice stuff. :X