We're not really Doctors. (Shirou x Harem) Arknights x Fate

Shirou, Rin, and Sakura find themselves stranded in another world courtesy of a certain Wizard. To survive, the trio starts a clinic while they get their bearings on this alien world. Unfortunately for them, they chose the best (or worst) possible disease to treat.

"Shirou, what is that?"
"Tainted Mana Crystals."

I've fallen this low to use Wattpad clickbait tags AND clickbait photos.
Seriously its impossible to get readers here.