I keep rewatching CGDCT Kin-iro Mosaic (with japanese immersion with mpvacious). There are so many things I didn't notce or just forgot about. The teachers in this anime are pretty funny. Something like, "Sensei, do you know how I can get along with my students?" — "Put on bunny ears, they will like it".
Aya is my favorite character. Slightly paradoxical, but she expresses her thoughts quite calmly and clearly, yet at the same time she is very sentimental, romantic and shy, especially with Youko, often struggling to string together even a couple of words. She is like Ayano with Toshinou Kyouko from YuruYuri, but Aya has a stronger tsundere side.
Sounds like meme, "two tsunderes: Aya and Ayano" xd.

I'm sorry didn't found better variant, but almost like this (be carefull, it's loud):