Call Me Henbane

Crippling social anxiety has silenced sixteen-year-old Maeve for most of her life. Now, it keeps her from achieving her dream to attend a prestigious karate camp in Kyoto, Japan. When she makes a desperate wish on a magical family heirloom, she gains extraordinary ninja skills; and possibly a way to solve all her problems.
Armed with these new powers and a thirst for vengeance, Maeve becomes the city's own vigilante known as Henbane.
But with amplified abilities come dangers that not even He...