Fumetsu No Anata E Episode 2 -

March initially accepts her fate to protect her younger sister and her friend Lalah, who would be chosen in her place if she refused.

The Beholder notes that "Pain promotes growth". Fushi's multiple deaths by boulders and the bear accelerate his regeneration and learning. Fumetsu no Anata e Episode 2

Despite her parents' acceptance of the tradition, March’s survival instinct eventually overrides her societal conditioning, leading her to flee and ultimately cross paths with Fushi. Fushi’s "Rebirth" as a Human March initially accepts her fate to protect her