Does wearing a mask cause a drop in blood oxygen levels? No. Doctors wear masks for very long periods of time, even all day, in lots of cases. Masks are designed to be breathable, and there's no ...
From his Quirk to his origins, Chisaki was a villain who didn't take long to become loved by the fandom. There was one question about his appearance though - Why did Chisaki often wear a mask? To put ...