Well seems I've run across a couple more unknowns today. Or maybe someone here will recognize them.
最終戦争伝説 総集編・上 (Final War Legend Omnibus - On the)
http://www.suruga-ya.jp/database/ZHORE68154.html最終戦争伝説 総集編・下 (Final War Legend Imnibus - Under the)
http://www.suruga-ya.jp/database/ZHORE68155.htmlClearly, both appear to both be doujins seeing the total absence of any official Sega markings, that and the site acredits them to being made by まんが同好会 (translated = Manga Club).
My best guess, since I can locate no additional information on these elsewhere on the internet, is that they are perhaps a two part omnibus collection of a doujin manga series from the 90's. But keep in mind that is purely my speculation on the matter. Each book is listed as being in the A5 form factor (roughly 5 7/8" × 8 1/4" inches) and consisting of 384 pages. Publication dates for both is given on that site as August 15th, 2003. That date is significant because in Japan, Sega Ages 2500 Series Vol. 1: Phantasy Star Generation:1 for the PlayStation 2 was released on August 28th, 2003. The publication of these two omnibuses at that time was clearly meant to coincide with the re-launching and renwed public interest in the original RPG franchise.