If you haven't seen this yet, check it out - apparently it's advertising for a drink called C.C. Lemon (wiki). Youtube explanation:
It starts out innocently enough - a pair of ordinary schoolgirls, close friends, are messing about, shooting a video of each other on a smart phone when one of them suddenly bolts. Her friend gives chase and things escalate when the pair uses ninja tactics in an epic pursuit that leads from the school all around the city of Atami.