Silent Witch - Chinmoku no Majo no Kakushigoto

Monica Everett is revered as "The Silent Witch." She's the only magician in the world who can use magic without an incantation... In reality though, she's just shy— the only reason she practiced chantless magic was so that she wouldn't have to speak in public! Before even realizing her own talent, Monica is chosen as one of the "Seven Sages," and is assigned the secret mission of protecting the kingdom’s second prince...?