Occupying two dimensions-one that is tangible and heart-wrenching in its details of traces left behind, and another that is cosmic, created by the boy's imagination as he longs for a reunion-One Day explores the inner world of a child as he comes to terms with a deeply felt and aching loss. A boy's grandfather goes away suddenly, never to return.

How could he leave just like that, without even saying goodbye? His smell remains in his sweater, and his shoes wait to be worn, but he is nowhere to be found. As the boy looks and wonders, a refrain runs through his mind, Grandpa is gone. The boy lingers in the midst of his grandfather's things, to feel him and remember, but also as a way of beginning to say goodbye.

There in the quiet, the boy begins to imagine his Grandfather returning to the planets and stars, the faraway home from which he must have come.

This is a beautifully made book, in which the cosmic dimension of the story inhabits its very construction. It is a wonderful story of agency and imagination, showing a child navigating the very process of filling the absence that death brings through storytelling and self-reflection.