Having just moved from Nagasaki to Kamakura, Maiharu Hiromi leaves her house on a bike to attend the Minami Kamakura High School entrance ceremony, but she realizes that she's forgotten how to ride a bike for some reason. When she runs into Akizuki Tomoe, she begins practicing how to ride a bike, but...
Carbon: Strong and light, but expensive.
 For people looking for speed.
.قويّ وخفيف، لكنّه باهظ الثّمن :كربون
 .للأشخاص السّاعين للسّرعة
Karbon: Stark und leicht, aber teuer.
Für Leute, die es schnell mögen.
Carbono:
Fuerte y ligero, pero costoso.
Para quienes buscan velocidad
Carbono:
Fuerte y ligero, pero caro.
Para quienes buscan velocidad.
Il est composé de fibres,
Carbonio: È robusto e leggero, ma è costoso.
Ideale per chi cerca la velocità.
Carbono: forte e leve, mas caro. 
Recomendado àqueles que desejam velocidade.