Watch Online Free on Watchseries. Fantastical road movie about a pained guy and girl who head from the boonies to Tokyo. Hiro Kenichiro has directed numerous music videos and makes his feature film debut. Set in a world where people get a "blue mail" missive from their future selves. Kagari randomly meets a runaway girl named Yuki. They set off on a trip for Tokyo and gradually discover each other's past secrets.