contains original character songs by the Japanese voice actresses and was released November 6, 2003. The second album, Popo Music, comprised the anime's original soundtrack by Ozamu Tezuka and was released on the 27th. Radio drama and publications Petit Ferret developed a radio drama named Poporaji, based on a song used in the anime's broadcast premiere DVD, The Secret of the 3 Sisters. The show focused on the three sisters and Mea with their respective Japanese voice actresses playing their roles. It was broadcast by Osaka Broadcasting Corporation in two segments; the first ran from April to September 2003 and the second from October to December 2003. TBS Radio rebroadcast the drama later in its debut week. Petit Ferret announced on January 22, 2004, that Poporaji would be replayed on BEAT NetRadio on Bandai Visual's website and compiled into two CDs, and Poporaji Popoi CD2. Sasami Uachiruda and SPIRITE wrote and illustrated two novels, entitled and published by Softgarage on June 20 and August 22, 2002. These novels follow the plot of the series, involving all notable characters and combining their personal storylines. Magazine Z published a two-part Popotan manga series by Yūjiro Izumi whose story revolved around the three sisters. The manga was released in two volumes on December 19, 2003 and August 23, 2004. Two Popotan reference books have been released—, published by Petit Ferret and SoftBank Publishing, and distributed by Raspberry Books; and by Air Publications. The Popotan Visual Fan Book featured a new side-story printed in western format. Kadokawa Shoten published an art book for the series entitled . Popotan illustrations also appear in . A fan book by for the television series was released March 5, 2003, entitled and containing a Microsoft Windows CD-ROM with extra content. Legacy, reception and sales Visual novel Popotan visual novels released by Petit Ferret enjoyed strong initial sales. PCNews' national rating of bishōjo games listed Popotans initial CD-ROM release at ninth place around one-and-a-half months after its release; it stayed on the charts another half-month at twenty-first. It returned six months after release for a brief stay at forty-sixth shortly before the fan disc was released. The DVD-ROM re-release rose to twenty-fourth in overall sales one month after its debut. The fan disc's release propelled it to eleventh among the most sold bishōjo games within one month. The PS2 port Oshiete! Popotan received a score rating of 22 /