Ability: Manipulating Names (Lost Word) 

Namae's ability from Touhou Lost Word. 
It is said that a girl who got spirited away by Yukari Yakumo to solve the Lost word incident. Namae's ability is to manipulate names. Perhaps due to this ability, she is capable of transforming into her friends. 

This ability allows her to do several things

1: befriending the people (including Youkai) of gensokyo through prayers

2: transform into said friend for a short period of time.