There is no reason to play without Luma in this matchup. Platform camp whenever she dies until she comes back.
Ryu has a lot of hitlag on several of his attacks. Thus Ryu's moves will stall on Luma frequently. Keep this in mind and avoiding running into the attack after it's already hit Luma. You can use this to your advantage by giving yourself more time to punish any given attack.
Rosalina & Luma
Ryu has a lot of hitlag on several of his attacks. Thus Ryu's moves will stall on Luma frequently. Keep this in mind and avoiding running into the attack after it's already hit Luma. You can use this to your advantage by giving yourself more time to punish any given attack.