Vision

Vision is an ability which allows its user to copy any technique they have seen. While for someone it takes years to learn something, Vision can do it instantly.

Rin Hazuki during a training with her daughter, Mai, used Vision to imitate Meifang Lapislazuli’s mysterious technique, Taro Sasagae’s strings, and the intimidating presence of her husband, Hōichirō.

According to Rin, Mai as a Pure Grimoire could probably be able to learn Vision within a week’s training.