Blood type compatibility dating
People with blood type B were just the opposite – easily roused to anger and unintellectual.
Furukawa published a series of articles and books, called “The Study of Temperament Through Blood Type,” which the public gobbled up, despite a complete lack of hard evidence.
In Japan, a person’s blood type or ketsu eki gata is a popularly used to determine a person’s temperament, much the way Americans use astrological signs.
You may happen to know if you got blood taken recently and remembered to ask or your parents might remember, but it’s not something that we spend a lot of time thinking about.
People with blood type B are often considered more relaxed, freewheeling, and unconventional than other types, although not necessarily to an unacceptable degree.