I think it's really cool that FullStop Heasu is one of the few IDs that got their skill changed due to a mistake, and instead of having it be altered to fit the text, the text was changed.

From Pierce Resistance down to Pierce fragility. All because they thought that people would think it's a nerf, so they thought it was better to leave it be that way.
Main difference of course was that
>Pierce fragility makes you do more damage against people who are already weak to pierce while doing less against enemies who resist pierce
>Pierce resistance makes you do more damage against people who are resistant to pierce while doing less against enemies who are weak to pierce