In Hokkaido seeking medical care, Jack grapples with solitude and discontent. One fateful night, a mysterious horseback rider crashes through his window. Inexplicably recognizing the stranger as Cu Chulainn, Jack unlocks the 'moonlight shadow window,' transporting him to Nymphidia from 'A Midsummer Night's Dream.' Here, denizens eagerly anticipate the crowning of a new Fairy King. Inspired by Ryoko Yamagishi's 1978 manga.