The Rosa used has her role ex unlocked, but it is not needed at all to clear this.
Technically 2/5 is possible too, you only need charging infliction 2 and potion refresh, but it would be unbearably reset heavy.
Grid used is in the comments.
This run is using skill gears, they are shown at the very end.
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Grid used:https://ng-pomatools.web.app/pairs/10102/64800?s=3&l=150&r=6&p=0&a=0&g=AAECAwQFBggaHB4fICEjJCYoKg&x=true