The inaugural release in this series was Dai shitsugen hōman tenshi (大湿原豊満天使 ＶＯＬ．１; PAD-001) starring Hatsune Kamori (神守はつね). Arzon lists its DVD sales date as June 14, 2003, though its 60 minute running time clues us that it was first released much earlier. I would guess the release date of this series to have been late 1990s, and a further possibility is that these DVDs are just a re-release of the earlier VHS Chubby-Chubby Angels series.
the fourth one stars Kaori Mei (芽衣カオリ). We saw two Kaori Mei DVDs on September 2, 2012 (RP002 and RP003), September 16, 2012 (RP014 and RP015). It's worth noting that the cover of RP014 is nearly the same as this one, further indicating that this series is just be a re-release of the Chubby-Chubby Heaven series.
the fifth entry is An Asakura about whom I have no information. The maker of this DVD is listed as Bee House.
PAD-007 also has Bee House as maker. I can't quite make out the star's name from the cover: Haruka Shima-something.
みなみ由良) stars in PAD-010.
listed at Arzon: LPN-02, further indicating multiple re-releasing/re-packaging going on within these series.
PAD-015 was released January 11, 2005, according to Arzon, and stars Mayu Tsuruki (鶴木まゆ).
Usagi Minagi's PAD-016 which was reviewed at this blog on August 25, 2013.This is the only release in the series with a big-name star, and this is the DVD which lead us to today's investigation of this series.