Samurai is a Japanese warrior in 10th centuries. Although Samurai fighting was ended in around 1876, there are several cultures & styles from samurai that can be learned 'till now such as hairstyle, fashion, & business strategy.
Photo by JFA-japan
Samurai hair usually is called chonmage hairstyle. It shaves hair from the top to the crown while keeping the other part of the head grow long & ties into a small ponytail at the top of the head. Chonmage hair is now worn by sumo wrestlers without shaving the top of head.
Shown above is the character of Miyamoto Musashi, a samurai and the author of The Book of Five Rings (a well known book on classic military strategy that is studied by numerous businessmen today).