Hilia's battle essentially ended after defeating two priests.
The three phantoms following weren't her enemies but Rose's adversaries.
They were foes he encountered in his early days.
He couldn't remember exactly who they were, much like trying to recall the shape of the bread one ate on a specific day.
Typically, a mage ascends the ranks alone; teaming up is a rarity.
Teaming up introduces each other's enemies, increasing difficulty and making it much harder than going solo.
Yet, the chance of facing an undefeatable foe is zero.
Because the foes manifested are always matched to the mage's current strength.
Just like now, although bosses are increasing, their power matches Hilia's, ensuring they are conquerable.
All with the premise that Hilia still has the energy to fight.
Clearly, she doesn't.
Rose entered with Hilia, which in some sense can be considered a team-up.
The difference being that others can't control their team-ups, while Rose can influence them.
