Dolly Night

Shibuya. Boy Junna wakes up in the alley dump with a memory loss. Girl Hina floats before him asking to look for something and disappears. A silver-hair man in the black veil Arstad passes by revoking nostalgia feelings.
Detective Tagami chases puppet master Arstad suspected of murder.
What's the truth behind the murders, the memory loss and the object searched by Hina?

[From vndbreview]