Battle type nuhe and a Guardian type nuhe? never heard or seen that mentioned on the original game.
Iirc Hibachi is just like your other nuhe, but Kazemaru just doesn't want her sacrificing herself just like the other nuhes, hence that once receiving the order "not to die" from Kazemaru, her fighting style would change. Seems like the artist/author left a lot of details and added additional ones to skim the chapters.
I thought that Rance would screw Hibachi (existed on the game, but non-canonical), but seems like they went with the canon route instead where Rance gave up to have sex with Hibachi (only achieved oral on the ero diary on the wiki).
Wonder if they'll draw Kazemaru and Hibachi getting laid, since it existed in the game, but was never drawn.