* Based on a bonus scenario written by Nasu Kinoko and designed by Takeuchi Takashi for Chunsoft's visual novel mystery game 428: Fuusa Sareta Shibuya de.
Two years ago, Shibuya was ravaged by a biological terrorist attack using the deadly Ua virus. Oosawa Maria was saved when her father inoculated her against the virus, but is left with partial amnesia from the shock. Now…