A couple of quick things (learned this stuff from Dacidbro while watching a SMB3 speed run, surprisingly):
I'm not sure if this applies in the air as well, because I haven't tried it, but if Mitsuru tries to raw Bufudyne, you can Garudyne on reaction and it's an easy 3.6k counter-hit super, or if you have the meter and the requirements are met, you can IK on reaction to this as well.