Double Score ~Tulip~

Release Date: 2012/08/31

Cast:

土夢 : KENN

桐野 宗也 : 関智一

Tomu: KENN 

Kirino Sōya: Seki tomokazu

がーるず★パラダイス・逆ハーレムパーティー 2

Release Date 2012/05/09

Cast:

関智一(藤崎リョウ)平川大輔(椿木智也)

Seki tomokazu (Fujisaki Ryō) hirakawa daisuke (Tsubaki ki Tomoya) 

モモっとトーク・スペシャルCD 5[川田紳司 関智一 等]

Release Date: 2011/04/27

Cast:

川田紳司 [ Kawada shinji]

関智一 [Seki tomokazu ]

谷山紀章 [Taniyama kishō]

緑川光 [Midorikawa hikaru]

小野大輔 [Ono daisuke]

安元洋貴 [Yasumoto hiroki]

羽多野渉 [Hatano wataru]

O.To.Na Gentei Kanbyou is a CD in which two different types of characters tend to you in various situations where you are sick/tired. Each CD has two (entirely) different types of characters, and each one has 5 situations. Everything is recorded with the dummy head microphone, so at times it sounds like they are whispering in your ear.
Company: Nihon Colombia
Official Site:http://columbia.jp/otonagentei/

 幕末志士の恋愛事情～姫こう夜伽 ひかる君の手～

 Release Date: 2012/01/18

Cast:

Seki Tomokazu: Ryoma Sakamoto
Ryutaro Okiayu: Takechi Hanpeita
Shinichiro Miki: Okada Izō
Kenichi Suzumura: Shintaro Nakaoka
Toshihiko Seki: Shinsaku Takasugi
Takahiro Sakurai: Kogoro Katsura
Takehito Koyasu: Okubo Toshimichi