That's So Japanese!

Japanese people ask others what their blood type is and discuss blood type personality assessment as a replacement for greetings. Although this is common among Japanese people, it seems strange to foreigners. When we asked foreigners in the city, many of them didn't even know their own blood type. We thoroughly investigate habits that are common among Japanese people but seem strange to foreigners around the world. Why do Japanese people tend to XXX? We elucidate these mysteries.