Nia is super serious when it comes to studying is exceptionally athletic and as Rokka stated has an extremely good fashion sense and style. She easily passed Aizawa who is considered the fastest runner in the school. When Aizawa confronted her saying her running speed isnt normal she became scared and backed off. Rokka is also fascinated by her panties and started stalking her. In ch 30 a cat was found injured. Junksan entwined her tail and Nia woke up naked. It turns out Nia is a Nekomatta.