>>721126809
It's a prequel book that came with the game. A Japan-exclusive I'm afraid.

This is the original version in japanese:
https://archive.org/details/thetruestorybehindbiohazard/The%20True%20Story%20Behind%20Biohazard/mode/2up

I think this guy somehow translated the original:
https://www.youtube.com/watch?v=XkYVnGnO3Jk&t=1s

It's funny because the english version completely changes the story in order to ship Chris and Jill even more. This is the english version:
https://www.projectumbrella.net/resident-evil-the-book.html
https://www.youtube.com/watch?v=xwURJNYndDQ&t=1s