Kana Koumoto - a cheerful 17 year old who can often be a klutz and nosey. One day, while hanging out with her besties (Pets, Mossan and Hijiri), Mossan starts making a rocket using empty soda bottles. 
Bottle rockets?
Eine Flaschenrakete?
Les fusées à eau ?
Un razzo ad acqua?
Ракеты из бутылок?