>>279636837
>>279636887
Riko had to suffer before her relationship with Reg could transcend her treating him like a robot and recognizing truly precious and valuable his protection, friendship, and love is. Faputa had to suffer to understand her nature and move beyond her insatiable vengeance. Vueko had to suffer to finally understand that she didn't fail Iru, and how much she was valued. Nanachi is currently suffering to finally transcend her guilt over helping Bondrewd with his experiments.
The entire thematic throughline of the series is about what you're willing to sacrifice or suffer through to get what you want: Will you risk life and limb to explore deeper into the Abyss? Will you endure horrible and painful curses to bring back treasures and secret knowledge? Will you give up life on the surface to discover the mysteries of the netherworld's bottom? Will you sacrifice those around you for your own ends? Or will you sacrifice yourself for others? And so on.
The entire basis of dramatic catharsis, going back to the time of Aristotle, is rooted in the nobility of suffering and in seeing the arrogant, vain, or villainous succumb to it and the selfless, decent, and heroic overcome it.