Kansuke Yamato is a police officer from Nagano Prefecture with a prominent pair of criss-crossed scars over his blinded left eye and an injured left leg due to an avalanche accident which he sustained from chasing a criminal. His name is based on the strategist Yamamoto Kansuke. Kansuke is also a childhood friend of Yui Euhara, as well as her superior in the Nagano police.
(Source: wikipedia.com)