A girl who sees only the bad in humanity; the darkness, the lies. And a boy who sees the spark of light that still lies between the darkness; he's dying, but he's happy, he's trying to. Will he be able to show Miri the good of humanity? Will he become truly happy before he passes?

Yasuhiro is a lonely student who begins to live with a girl who cannot speak, a silent romance that gradually begins to bear results.