video game screenshot of a woman holding a sword with two large metal sleeves that stop at her shoulders with no body armor wearing a bathing suit style outfit

Exercising the right to wear arms

From @SoftestPuppy:

You see, if you would read the lore you would know this is practical battle attire.

With additional commentary by Paisley Rae:

she’s gonna get a front wedgie the second she has to lunge for a thrust. - with love, someone who fenced for many years

Is this like an Achilles heel situation?  Is she invincible everywhere but her arms?  That or she was at the beach and wanted to avoid overtanning her arms... it would explain her bathing suit.

(Screenshot from Granblue Fantasy)