428 ～封鎖された渋谷で～

A present-day story about a detective, a young man, a virus researcher, a freelance writer, and a cat mascot character who are brought together by bizarre events with worldwide implications in the Tokyo neighborhood of Shibuya. The narrative is presented using a combination of scrolling text and live action video sequences, also contains a bonus chapter courtesy of TYPE-MOON. [From Anime News Network and Wikipedia]