Secrets of the Silent Witch, Vol. 1 (Manga) - Matsuri Isora

Monica Everett is the Silent Witch, the only mage in the world who can use unchanted magecraft. But underneath all the fancy titles...she's also the shyest girl you'll ever meet! In fact, she learned unchanted magecraft just so she wouldn't have to speak in public. Monica may be talented, but she has zero confidence, and now she's being tasked with infiltrating a prestigious academy and protecting the kingdom's second prince! How will she survive?! nMonica Everett is the Silent Witch, the only mage in the world who has mastered the art of unchanted mage craft. But Monica hides a secret: There a son she learned to use magic without speaking is merely because of her extreme shyness. Until now, she's been content living a peaceful life hidden away in the mountains, but an unexpected visit from a colleague brings her a task more daunting than any other. Now, it's up to the world's shiest mage to infiltrate an academy and protect the second prince from danger...without letting her fears get to her!