Forced to seek shelter as temporary reprieve from the rain, Ginko meets a man chasing rainbows out of desperation rather than hope. Having inherited a name and a curse from his father, two ages of one family wasted in search of a fleeting fruit after the rain. Recognizing the rainbow as mushi in brilliant disguise, Ginko agrees to chase storms alongside him, adding his knowledge to the quest. But where the father was driven by joy, the son is driven from shame. Can the source of hope be caught by one without it?