Nao Horie

Appearance
She has yellow eyes and long, blonde hair, with which she wears a pink hair band. In the manga, she has brown eyes and auburn hair. Her design was most likely changed in the anime due to the similar looking, original character Chizuru Kawanami.

Plot
Nao was the target of the twin Dream Demons Aeolian and Ionian. After having the same nightmare several times, she begs Yui for help, who immediately takes her to Merry and Yumeji to confront the sisters.

Yui Konagi
They are great friends. Nao easily realizes Yui's feelings, as when she is worried. Nao was angry with Yui when she heard the dream demons because she could have done something to save her sempai.

Hino Akane
It was she who persuaded Nao and Yui to join the club of wind instruments. Nao was saddened when her sempai quit the club.