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. 
What are you trying to do
here on Earth, Raharu?
Was treibst du hier auf der Erde,
Que viens-tu faire sur Terre
après toutes ces années…