Suffering the trauma and shame of his masters death, the Ronin eventually grows accustomed to a cold life of solitude, money, and slaughter.
In cinema, the typical Ronin is depicted as quiet, single-minded, stripped of all emotional extremes, reluctant to accept friendship, and fiercely independent. He kills (does his job) with a mechanical indifference. His one desire is to complete his accepted life purpose: to find his honorable death (to finally finish his part of the great work).