- Country: Japan
- Genres: Animation, Horror, Mystery
- Release: 2008-10-09
- Director: N/A
- Writers: N/A
- Language: Japanese
- Stars: Todd Haberkorn , Brittney Karbowski , Carrie Savage , Eri Kitamura , Hiroyuki Yoshino , Ui Miyazaki , Colleen Clinkenbeard , Colleen Clinkenbeard , Stephanie Sheh (I) , Yui Sakakibara , Jamie Marchi
- Runtime: 25 min
- Awards: N/A
- AKA: Хаос; Вершина (Russian Federation) , ChäoS;HEAd , Chaos;Head , Chaos Head (Japan) , Chaos;Head (United Kingdom) , Kaosu heddo (Japan) , Kaosu heddo , ChäoS;HEAd (France, French Republic) , Chaos;HEad (United States of America) , ChäoS;HEAd (United States of America)
- Plot: A high school student who stumbles on a murder scene spirals into paranoid delusions as he becomes convinced the police are after him.
- IMDB:tt1278254
ChäoS;HEAd Cast · · · ALL
Hitomi Nabatame
Sena Aoi (voice)
Ui Miyazaki
Nanami Nishijō (voice)
Chiaki Takahashi
Yua Kusunoki (voice)
Yui Sakakibara
Ayase Kishimoto (voice)
Hiroyuki Yoshino
Takumi Nishijō (voice)
Ayumi Tsuji
Kozue Orihara (voice)
Eri Kitamura
Rimi Sakihata (voice)