mahojo s5&6 info

Stage 5 boss: The Devilish Houjou Inari, Nezu Akitsu. A youkai kitsune appearing in folklore about the warlord Houjou Ujiyasu, wherein Houjou banished her by composing a poem on the spot. The "Houjou Inari" in Yatsu, Odawara is said to have been enshrined by Houjou Ujimasa following Ujiyasu's death, thought to be a result of the fox's curse. (According to JP wikipedia)

Nezu's backstory is that she was defeated, as in the real-life folklore, and made to serve the Houjou clan. (Specifically, her new master was of the Fuuma ninja clan, which served the Houjou in turn.) When the Houjou clan fell in the siege of Odawara Castle, she attempted to escape, but was still bound to serve the Fuuma. Having entered Gensokyo, she encountered a remnant of the Fuuma clan (the stage 6 boss), and convinced them to help restore her power. To do so, the two piggybacked on the Moriya Shrine's Tanabata plan and increased the power of the Summer Triangle; they then channeled that power into the fox constellation Vulpecula, which is located in the triangle's center. Nezu planned to betray the stage 6 boss and gain power from the entire night sky, but the protagonist arrives and shoots her down right after she's unsealed.

Stage 6 is located in the Mahoujou, a phantom of Odawara Castle created by Nezu's power. The day the castle fell was right before the old calendar's Tanabata.

Stage 6 boss: The Godmother in Search of Her Own Name, Fuma Mishandra. A divine spirit born from the 'treasure' that Ichiyou was searching for-- namely, a summoning grimoire. Not just any grimoire, either, but the Lesser Key of Solomon. A member of the Fuuma clan, having gotten his hands on this grimoire from overseas, planned to turn the tide of battle at Odawara by using the Summer Triangle as a giant summoning circle. (There's actually a smaller triangle of constellations-- Sagitta, Vulpecula and Delphinus-- located within the larger triangle. Combined, the two would form a hexagram for the summoning circle.) Unfortunately, the Houjou lost the battle before the ritual could be completed on Tanabata. The grimoire's owner thus sealed it away, along with the seal on Nezu's power and the unfinished summoning ritual. Fuma herself is a divine spirit created from the owner's desire to see the ritual completed. Nezu eventually came into contact with Fuma, and as mentioned above, the two planned to finish the ritual and unseal Nezu.

Fuma initially had no memories beyond her purpose of completing the ritual, but when her seal came undone, her memories were restored. She realized that the Houjou and Fuuma clans, and their war, were a thing of the past. As such, she decided to use the ritual's power to re-seal Nezu... but despite her attempt to explain her intentions, the protagonist shoots her down anyway and Nezu ultimately ends up on the loose. Whoops!

*Being a magic grimoire with a bunch of information packed into it, she has the ability to absorb information from a myriad of outside sources. Her final spell card, according to the video text, represents her searching through information from 'parallel worlds' (ie. other fangames by ido, Milka et. al) and copying spells from them before finally representing herself with an original pattern.

*Incidentally, the initial draft of the plot had a magic-wielding Fuuma descendant as the Stage 6 boss, but having the grimoire's spirit itself as the boss was cooler.

*"Mishandra" is the name of the Key of Solomon's alleged 73rd demon, who secretly rules over all the others... and is completely made-up by 2chan. Fuma knew that it was made-up but picked the name for herself anyway, since it was fitting.