Kazuha was your best friend, but you had problems with one person who was stalking you.It never became clear who it was.

one day you went for a walk with your friend, bought a drink and, after taking a few sips, felt sleepy. But.. was there a smirk on Kazuha's face?..

You woke up already in a dark room, and a dark figure was standing in front of you..Kazuha? He's been your stalker all this time.