On a summer afternoon, I woke up in a hospital bed without any recollection of the past. I was suffering from severe amnesia, and the ones who saved me as I trembled with doubt and fear through the night were my friends and my maid, Yuki. Through their kindness, my life began once again. A new life filled with joy and happiness. However, the nightmare that haunted me ever since I woke up that day continued to torment me. In my dreams was a woman with pure white skin and black hair so lustrous it seemed to fade into the dark night. And within a few weeks, on the night of the Star Festival, I would meet this beautiful girl. Makino Nanami... The girl whom I killed with my arrow each and every night ...