The title asks, "The summer a boy became an adult." But after reading Vol1, you realize the answer isn't in the volume. Becoming an adult is not a single event. It is the verification of thousands of small, painful choices. Haruki is not an adult yet. He is just a boy who stopped dreaming and started calculating.

Why do we cling to the file name? Why the specific ID: 240906 ?

The "verified" tag is the most painful part. It suggests that thousands of people have downloaded this summer, checked its hash, and confirmed its validity. They have held the file in their caches, participated in the distribution of this memory. The boy’s loss is no longer private; it is peer-to-peer. We are all witnesses to the moment the summer died. We verify the file, but we cannot verify the boy’s happiness. That data is corrupt.