That's the symbol for 'debuff immunity' skills. I think the joke here is that getting your head bitten by a rabid wolf somehow will make you resistant to diseases, something that Fujimaru also can't comprehend.
That's the symbol for 'debuff immunity' skills. I think the joke here is that getting your head bitten by a rabid wolf somehow will make you resistant to diseases, something that Fujimaru also can't comprehend.