The Incompetent Daughter and the Book of the Abyss

Nota Gervath, who was depressed by an incident in the past, accidentally became the tutor of Serafina, the daughter of the noble "Von Astor" family. However, she learned the inside story about Serafina's inability to use magic. Scorned by her family and isolated by her classmates, she never gave up on realizing her dream. With the help of Nota, she gradually unfolded the mystery and gradually revealed the truth of the world.