This Is Screwed Up but I Was Reincarnated as a GIRL in Another World! (Manga) Vol. 4

<b>In this isekai tale a male scientist from Earth is reborn as an orphan girl in a world of swords and sorcery.</b><br><br>Ren is a young girl in a primitive world of magic and brutality. Sold as a slave and about to be delivered to an unscrupulous merchant she suddenly awakens to vivid memories of a past life: a world called Earth where Ren was both a grown man and a research scientist. Now she must learn to survive combining her knowledge of science from her past life with her talent in magic from this life.