Ok most people with this condition dont know they have it at all. Most people find out when they are elected to go to surgery. Pretty much their no negative but some people have died due to surgeries where they removed the wrong organs like in one case where the doctor removed the liver instead...
People who are saying it's not a swastika are kinda missing the point. Sure it's the flip ver that had religious tones for thousands of years but that ignores the history during WW2 and the pain the reversed means. Good manga tho just wish the writer had better taste and a better understanding...