Rui is a reticent ex-kickboxer who has broken away from a shady job as a mob debt collector and now lives a lone life from day to day. While at work, he meets Akari, a blind yet cheerful girl despite her loss of eyesight and her parents in an accident some years ago. Since then Akari’s frequent visit and carefree brightness bring Rui out of his shell and the time with her begins to shine in his darkness. While their hearts get closer together, little do they know that his bitter past and her sight loss were deeply intertwined...