Yaya Sasame is a main character in the series Hanayamata.
Yaya is Naru Sekiya's best friend, who has both brains and beauty, but messy handwriting. She is talented in playing drums and sometimes write songs for her band, Need Cool Quality. She often displays a cool personality,which Naru looks up to. But underneath the cool display, Yaya can actually be a crybaby if she wants to. Her favourite flower is a rose. Birthday: June 1st.
- Yaya is overprotective towards Naru.
- Calls Naru "hers" and has tsundere-like tendencies despite not actually being a tsundere.
- Blushes whenever she cuddles Naru.
- Acts cold towards Hana N. Fountainstand and seems to be irritated by her, taking a dislike to her for a while after they encountered, knowing that Hana usually touches or hugs Naru whenever she wants.