This Is Screwed up but I Was Reincarnated as a GIRL in Another World! manga volume 2 features story by Ashi and art by Uchiuchi.

Ren was once a scientist—and a man—in our world. Now she’s a healthy young girl with magic powers and all the knowledge of chemistry and physics of a modern adult genius! She’s tamed a mother wolf and pup, and is living out her days in cheerful isolation when some strangers knock on her door, demanding help with a deadly plague! The answer is a simple one, but it’s going to make life very complicated for Ren when a young man keeps sniffing around, hoping for a closer look…