さよならポニーテール

Sayonara Ponytail (さよならポニーテール) is a fictional Japanese acoustic pop band created by an illustrator who goes by "Yuritan".
Described as a group of three "mysterious girls" (Miina, Nacchan, and Ayumin), they reside in a fantasy world. It is not truly known who controls the group as a whole.
In 2011, they released their first album, "Momyu no Ki no Mukougawa" (モミュの木の向こう側).