By far the most original, Japanese specific men hairstyle of the time was chonmage. Extremely popular among the samurai during the Edo Period, chonmage was a shaved pate with the rest of the hair tied in a topknot.
However, in 1871 the Meiji government issued a law, the Dampatsurei Edict, according to which the samurai were banned from wearing topknots, being forced to use the Western hairstyle. This was the end of the chonmage, the only ones allowed to wear a topknot remaining the Sumo wrestlers... but without the shaved pate...
EXIF info:
Nikon D80
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 18mm
Aperture: F/5.6
Shutter Speed: 1/60s
ISO Sensitivity: ISO 400