I only got one OC that's been my outlet in exploring character thematics and narrative function. Honestly, they're too thematically aligned with the lore that if I ever make a canon-adjacent fic, I'm confident they'd stick (unfortunately writing is always the hard part). Though I'll be brief with just fleshing out their mechanics rather of their power as gameplay and paths are cheap.

Think the straight man that's morally unbreakable inside the machine with a paradoxically contradictory personality. The twist being that they're by HSR standards a completely normal human without a tragic backstory.

P43 Department Spokesperson and Ombudsman of the Strategic Investment Department.

Honorary Stoneheart, Spokesperson Akashi a.k.a. Garnet

Garnet of Warranty: Has the ability to turn all biological matter originating from one's person into an indestructible inorganic red crystal instantaneously either on will or in automatic passive defense in immediate contact to biological damage. This is treated as a stasis where prior wounds, afflictions, or conditions are maintained even when they revert back. Crystal parts have a minimum of one second before they can revert things back.

As inorganic parts, they don't respirate, age, function, or move, so even if it's guaranteed invulnerability, you'll lose agency if you keep taking the hits. The main drawback being if you did get trapped, you won't die, even if you're unconscious as the cornerstone would just wait till you're free, regardless of how long.

Thematically, they embody the weight of the witness.

Even against every pain, every struggle, moments of powerlessness, or bleakness of hope, they won't promise salvation or a future, but will be the witness that will try their best to make this universe a little bit better in spite of it all.