Your comment made me remember that there is some media (BG3, Vampeerz [also a GL]) that made having a near death experience a condition for the human-vampire to even take place. I can see the author making it a plot point by forcing Ruruna to make a decision as a way to save Wakana at a later...
oof, really tough.
"Walking Cat" manga may have elements of what are you looking for.
Additionally, tbh kinda forcing it because I wouldn't consider them as "survival horror" per se, but some mangas that I think may fit the criteria are "The Summer Hikaru Died" and "Normality and Monsters"...