Tetsuo's maternal grandfather is a kind old man living in Hokkaido,. He is very fond of Tetsuo and critical of his mother, who used to leave Tetsuo at his grandfather's place to go chase men. When Tetsuo and his grandfather are reunited after six years, they set off on a trip to thank all the people who'd helped Tetsuo along the way, and apologize to those whom Tetsuo stole from.