This Is Screwed Up, but I Was Reincarnated as a GIRL in Another World! (Manga) Vol. 19

The slow life gets hectic after Ren faces a surprise attack! Thanks to that, she's become androphobic--irrationally afraid of all men, despite having been one in her previous life. Thanks to the kind support of her lady friends Lillie and Arisa, Ren is able to get back on her feet, and starts off on a new journey. Ren decides she needs some extra protection, thus sets to work on her latest and greatest invention...Golem Armor?!