From MangaHelpers:
One day, 22-year-old Kanzaki Misuzu is suddenly transported to a strange world. Based on the pop-up screens she can access, it seems she's entered some kind of RPG as a magic user! Luckily, she can use the gaming skills she acquired as an otaku to make her way in this new world. But before she knows it, people start calling her "the Black Healer".