Modoken Quill no Issho

Quill - a Labrador Retriever's life as a 'dog' drastically changed when he was chosen and forced to leave his mother for a 'seeing-eye dog' training canter. Little did he know that he would later meet a strange man who would become his owner/partner. The gentle Quill was teamed up with a man who first refused to take a seeing-eye dog as a company. An incident occurred which caused this seemingly completely incompatible man and dog to come reply on each other, and begin to work together. This was their first step in becoming 'life partners.' When he walked with Quill, his partner felt the wind and could see the sky through Quill. The bond between Quill and his partner, who rediscovers the joy of life, grew deeper with each passing day. Until one day, they faced a sudden and sorrowful parting...
(Source: AsianWiki)
~~ Adapted from the photobook "The Life of Quill, the Seeing-Eye Dog" (盲導犬クイールの一生) by Akimoto Ryohei (秋元良平) and Ishiguro Kengo (石黒謙吾).