The Gal! Aho Girl!

While lamenting her lack of a love life, Atsuko encounters the captivating "Yoshio." Akuru and Yoshiko argue over Dog's name. Yoshiko tries to befriend some gyaru classmates. They trick Yoshiko into playing hide and seek, but then feel guilty after she disappears for three days. Ruri is greatly insulted by her brother's choice of birthday present.

Synopsis excerpt via Kitsu.