A Simple Thinking About Blood Type summary: Have you ever wondered why Koreans ask you about your blood type? It’s not because they want to know what to do in case you happen to be in an accident (although it really is vital information), but it’s because there is a underlying belief that blood types affect personalities and character in the way an astrological sign may. Another hugely successful webtoon, it has packed all the existing stereotypes of each blood type and more into a hilarious series. Strangely enough, there are many which are so darn true it’s kind of uncanny. Much funnier when you know your own blood type.