Yotsuba drinks some yummy milk, which she then decides she has to share with everyone. But when she forgets to share with Fuuka, this spontaneous little milk lady takes her new bike and goes off on a heart-thumping little adventure of her own.
Yotsuba's getting a biiiiike, Yotsuba's getting a biiiiiike Didja know the wheels of a bike go round and round and round and round and round and round and round and round and round and round and round and round and roun - oh, Yotsuba's getting dizzy...whoooooa...