We going OP Broken today

Say your OC gains One For All through circumstances (Like All-Might finds your guys first or something)

If your OC has a Quirk already then how does having OFA’s Stockpile/Superpower impact it?

I’ll start with mine for instance: Kenshi has a Regeneration Quirk and by the time OFA is circulating through him, he is essentially at the mercy of the side effect of OFA’s drawback (By having a Quirk first)…Because it damages him like a poison, his body is stuck in an equilibrium that while his body breaks down/succumbs to it’s effect, his body heals itself…Constantly rejuvenating him and keeping him alive until eventually the only ones still alive in the world are him and AFO who still has his Immortality Quirk