Answer:
Grandfather.
Explanation:
The book "Grandfather's Journey" by Allen Say is a story about the author's grandfather who had come from Japan to America. The story focuses on how the grandfather and the narrator relate to one another about missing the place they used to call home, the faraway land they had been to.
In the case of the grandfather, his first home was in Japan but had gone to America. After returning to Japan, he got married and then moved to America once again. After several years, they came back to Japan but had to move to a city to comply with the desire of his daughter who had grown up in a big city and could not live in a small village.
Thus, even though the narrator is the grandson, the main protagonist of the story is the grandfather.
