They have sang several anime songs such as:
Yatter-man no Uta (Yatter-man's opening song)
Kantsunda! (Yatter-man's ending song)
Ame tokidoki Hare nochi Niji (Ginga e Kickoff!!'s ending song)
Jinsei Wahaha! (Ginga e Kickoff!!'s ending song)
They have several cover songs that was included in their CDs such as:
Tensai Bakabon (cover song version of Tensai Bakabon's opening)
Geki! Teikoku Kagekidan (Revision) (cover song for Sakura War's 2nd game and 2nd OVA's theme song)
Arara no Jyumon (cover song version of Chibi Maruko-chan's ending)
They are a group made of 8 people. The members are:
Bukiya Momotarou (≒ Kyan Chiaki) is an Anime Otaku and especially loves Gundam. Also loves games, mangas, and cosplay.
Akazono Kojirou (≒ Konan Yuka) is a Fashion Otaku.
Seimyouji Uramasa (≒ Uraa Erika) is a Pro Wrestling Otaku and also loves idols. As Uraa Erika, cosplayed as Black Rock Shooter for Bushiroad Wrestling in 2011.
Midorikawa Kyouhei (≒ Kyoumoto Yuka) is a Fairy and Reptile Otaku.
Ruhara Renji (≒ Harada Mariru) is a Game and Manga Otaku. Own over 13000 volumes of manga, over 7000 games, and over 1000 limited edition anime DVDs (as of 2009). Have also done several cosplays.
Seto Kouki (≒ Seguchi Kana) is a Mystery Otaku, but also loves anime and anison. As Seguchi Kana, was one of the Finalist for Japan's 3rd Animax Anison GrandPrix.
Aiba Kensui (≒ Hasegawa Ai) is a Health Otaku. As Hasegawa Ai, performed in the musical MACROSS THE MUSICALTURE that was based on the Macross Series in 2012 and Nico Nico Musical's Senbonzakura based off the vocaloid song with the same title in 2013.
Yukimura Ryouma (≒ Fukumi Maki) is a High School Baseball Otaku.
There is a manga called Fudanjuku Monogatari by Tanemura Arina, published in 2011. The characters are based on the actual Fudanjuku. In 2012 it aired on VOMIC and the actual Fudanjuku members voiced their own character.
They have said that they would love to come to an anime convention in American in tokyohive's interview. A link to the video interview is here.
This post has been edited by Miyabi-chan: 28 August 2013 - 12:07 AM