The anime revolves around Hana Ichinose, who is secretly a year older than her classmates. She was held back a year because of sickness.
The original is a four-panel manga series by Tuiko Tokumi. It is running since 2013 and has released 4 volumes as of November 2017. It is being serialized in Houbunsha’s Manga Time Kirara.
Crunchyroll
Yuiko Tokumi
Hiroyuki Hashimoto
Mio Inoue
Masato Anno
Masako Ito
Nobuyoshi Yoshida
Katsufumi Hariu
Kanako Hokari
Shinji Nasu
Satoru Kuroiwa
Ayumu Takahashi
Jin Aketagawa
Toshiya Wada
Yoshiaki Fujisawa
Aniplex
A-1 Pictures
Reina Kondou
Ayasa Ito
Tomomi Mineuchi
Maria Naganawa
M・A・O
Maaya Uchida
Manami Numakura
A-1 Pictures
Opening: ne! ne! ne! by STARTails☆
Ending: Kaze no Koe wo Kikinagara bySangatsu no Phantasia’s vocalist Mia
© 篤見唯子・芳文社/スロウスタート製作委員会