The Boys on the Run page correctly lists Hanazawa Kengo as the author, but currently Hanazawa's author page does not list Boys on the Run as one of his series.

Weird bug? If anyone has an idea of what caused this, I'd love to know. Caching issue?

Deleting his name in both boxes and reinserting it fixed it. Who knows why the hyperlink failed.

I also read EU/US comics and am a librarian.
Manga-Masters, My ANN-Lists + Imdb