ChäoS;HEAd CDs

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Six different ChäoS;HEAd CDs have been released.

ChäoS;HEAd Drama CD - The Parallel Bootleg

The Parallel Bootleg CD cover

The Drama CD ChäoS;HEAD Drama CD - The Parallel Bootleg tells the story about another New Gen Murder, where a wealthy old man was killed in an utmost bizarre way. Since an acquaintance of Nanami Nishijou was also another victim, Nanami, Takumi Nishijou, and Rimi Sakihata decide to investigate the case. At the same time, Sena Aoi, Kozue Orihara, and Yua Kusunoki also set out to investigate the murders, all while the number of victims is steadily increasing.

The CD was released December 3, 2008, and distributed by Sony Music Distribution (Japan) Inc. for 3150 Japanese Yen (JPY).

ChäoS;HEAd Drama CD: Delusional Voices - Hazuki Shino Chapter

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Science Adventure Series Special Drama CD - Triptych of an Abrupt Chain

Triptych of an Abrupt Chain cover

Science Adventure Series Special Drama CD - Triptych of an Abrupt Chain (科学アドベンチャーシリーズ スペシャルドラマCD ~ 怱卒連鎖のトリプティック, Kagaku Adventure Series Special Drama CD Sosotsu Rensa no Triptych) is an anthology consisting of three dramas, all of which tie into different Science Adventure Series games: "Manatsu no Hiru no Caprice" (真夏の昼のカプリス) which ties into Robotics;Notes, "engimatic ward" which ties into ChäoS;HEAd, and "An Idol's Dream Stage" (偶像槐夢のステージ, Guuzou Kaimu no Stage) which ties into Steins;Gate. "An Idol's Dream Stage" follows Luka Urushibara as he is hired as an idol in an idol café.

It was released November 27, 2013, by publisher 5pb. (currently called Mages) for 2940 Japanese Yen (JPY) and distributed by KADOKAWA CORPORATION MEDIA FACTORY. It has a total runtime of 65 minutes and 53 seconds, "Manatsu no Hiru no Caprice" being 18:28, "enigmatic ward" being 22:58 and "An Idol's Dream Stage" being 24:27.

ChäoS;HEAd Radio - Delusion Radio Station

Delusion Radio Station CD cover

Distributed by Internet radio station Onsen (音泉), ChäoS;HEAd Radio - Delusion Radio Station (CHAOS;HEADラジオ 妄想電波局, Kaosu Heddo Rajio Mousou Denpa Kyoku) went every Friday from March 28 to May 30, 2008, with ten consecutive episodes. The episodes are hosted by the voice actors of Takumi Nishijou and Rimi Sakihata, Hiroyuki Yoshino and Eri Kitamura, and frequently feature guests such as Hitomi Nabatame, the voice actor of Sena Aoi. The radio programme was distributed in conjunction with the original release of ChäoS;HEAd on Windows April 25, 2008. The first half of each episode consists of Yoshino and Kitamura speaking as Takumi and Rimi, calling themselves Neidhardt and "Katze" respectively, whereas the voice actors speak as themselves in the second half. At the end of each episode, Takumi and Rimi tell the listener goodbye.

Chaos;Head Radio 01-10【ChäoS;HEAd ラジオ 妄想電波局】

All ten episodes of Delusion Radio Station (no English sub)

A CD version called ChäoS;HEAd Radio CD - Delusion Radio Station (CHAOS;HEADラジオCD 妄想電波局, Kaosu Heddo Rajio CD Mousou Denpa Kyoku) was released August 29, 2008 by publisher Nitroplus and distributor HOBIRECORDS. It contains all ten episodes plus the additional episode "Mouso Hanseikai" (妄想反省会) in MP3 format and two additional programmes in Audio CD format called "Takumi Nishijou's Everyday Life" (西條拓巳の日常, Nishijou Takumi no Nichijou) and "Blood Tune THE RADIO" (ブラッドチューン THE RADIO), the latter having the voice actor of Seira Orgel, Akane Tomonaga, as its host. The additional content leads to a combined runtime of approximately 7.25 hours.

Radio ChäoS;HEAd Love x 2 - Warning: Addictive

Cover of Radio ChäoS;HEAd Love x 2 - Warning: Addictive, with (left to right) Erin-fray Orgel, Seira Orgel, and Rimi Sakihata

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Radio ChäoS;HEAd³ Love x 2 - Warning: Addictive

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