Boku to Majo ni Tsuite no Bibouroku

A young boy is taken in by a witch over 100 years old in a forest. She raises him as part of her family, along with her cat named Hotaru. As he grows, he writes about his daily life to remember the time spent with them. Later, he begins to develop affection for the witch who raised him. He comes to understand that, as a human, he will eventually outlive her. The story follows the quiet, bittersweet relationship between the witch and the boy as time moves forward.