Himesaki Athena wa Jitsuzai Shinai.

is a Japanese light novel series written by Kaede Asamiya, with illustrations by Kuunerin. The series began publication on February 10, 2017 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A beautiful girl with a slightly higher degree of exposure suddenly appeared in the deserted ruins after school. For some reason, the name Himesaki Athena comes to my mind.

"Actually, I'm a brave man in a different world. ──If you suddenly hear something like this, you can't believe it."

"No, I believe it, because you're the character I thought of."

"... ......... Yes? "

" because, in the real world, if not it does not mean there are you like a cute child "

so. This is all an event of my delusion, she doesn't really exist.