Initial Plot:
It was a strange day when the Idiocy began to spread.
Most passed by unharmed, witnesses to the catastrophe. Some were affected mildly, becoming Idiot Princesses; some were sensitive to it, becoming Idiot Maidens and gaining considerable power at the cost of most of their intelligence.
Then there are those who are more sensitive still. These three chosen ones are collectively known as the Idiot Deities, the most powerful of all affected by the Idiocy. Unfortunately, as a result, they all have one-track minds and are somewhat lacking in brainpower.
So begins the tale of possibly heroes and possibly villains...
Title BGM: [Chronicles of the Chronically Stupid]
Stage 1
BGM [When Idiots First Take Flight]
Mid-boss: Jan-san
Power: Manipulation of Guitar Strings
Boss: Nwbi
Power: Manipulation of Chance
BGM [An Enemy For Some Reason]
Thinking that they're in a Touhou game, the first thing each of the Deities does is immediately attack anyone close by. The first victim of this is Nwbi, who swears that the other maidens will avenge him.
Stage 2
BGM [Rising To Heaven]
Boss: Tenshi
Power: Manipulation of Pain
BGM [A Pleasing Agony ~ Wonderful Torture]
Upon hearing of Nwbi's defeat, Tenshi (the resident masochist) proceeds to seek out the deity and challenge them to a fight. He loses, but he enjoys it.
Stage 3
BGM [Entering the Foolish Grounds]
Boss: BaitySM
Power: Manipulation of Grazing
BGM [Barely Out Of Reach - Cutting Close]
The deity stumbles upon a strange temple built into a nearby mountain, which Tenshi crashed into. There Baity appears, and warns them that they aren't welcome after taking down two of the maidens. The protagonist, naturally, doesn't care and proceeds to beat Baity up. His last quote before the end of the stage is 'Just don't interrupt him...he's been waiting years for this.'
Stage 4
BGM [High-Speed Throttle Ride]
Mid-boss: Tenshi, back for one more beating.
Boss: Vic Viper
Power: Manipulation of Machinery
BGM [Battle with the Legendary Ship ~ Shoot The Core!]
Entering the temple, the deity comes across Tenshi, who promptly rises up and challenges them to one last fight. Continuing on, they come across Vic Viper, who insists that they are interfering on the Maidens' affairs and need to leave. The Deity senses that this is where the Idiocy started, and challenges Vic for an explanation. A fight ensues, and as Vic is defeated he states that the Idiocy literally drains the intelligence from its victims. He refuses to explain why.
Stage 5
BGM [A Dark, Forgotten Corner]
Mid-Boss: UncertainKitten
Power: Manipulation of arousal
Boss: Anonymous Fairy
Power: Manipulation of fetishes
BGM [What I'm Into ~ Secret Desire]
Entering further, the deities come across the right-hand man, AF, and his assistant UK. After another hard-fought batte, AF admits that the Idiocy is designed to collect intelligence for the sake of reviving a forgotten soul by granting her a personality. The only clue as to the target's identity is 'someone who should have made it but didn't'.
Final Stage
BGM [Faded Dreams]
Final Boss: Theorist
Power: Manipulation of the forgotten
BGM [Collapsing Memory ~ Disregarded Grudge]
Last Attack BGM [Collapsing Mind ~ Overwhelming Vengeance]
The mastermind behind the entire incident turns out to be Theorist, collecting intelligence to revive the forgotten Rin Satsuki. This would normally be where a debate takes place as to whether Theorist's choice was right, but the deities aren't very clever and just beat him up anyway.
Ending Theme: [Might Makes Right]
Credits: [Foolishly Discarded Memories]
Extra
BGM [Last Remnants of Moronity]
Mid-boss: Purvis
Power: Manipulation of psychology
Boss: Slaves
Power: Manipulation of humour
BGM [The Idiot's Art Form]
The Idiocy takes some time to wear off after Theorist's defeat, much to the dismay of Purvis, and in that time the deities receive one last challenge in the form of Slaves. A young boy who may have been affected by the Idiocy even more than the deities themselves, his hilarious art proves to be a nightmarish challenge to the player.
Phantasm Stage (Unlock Requirements: Clear Extra, Capture 50 Spellcards including Tilde Moe~)
BGM [Last Remnants of Sanity]
Mid-Boss 1: Kilgamayan
Power: Manipulation of Numbers
Mid-Boss 2: Ruri Hoshino
Power: Manipulation of Emotion (or lack thereof)
Boss: TheStupidOne
Power: Manipulation of Idiocy
BGM [Idiot's True Form]
Just when the disaster appears to be dying down, the Idiocy reappears with a mind of its own, intent on completing the ritual. The deities realise that Theorist didn't create the Idiocy himself, he simply awakened it, and thus it intends to restore Rin itself. After defeating the Moderators it created for self defense, the deities fight against the Idiocy in its human form, by far the most powerful foe they've faced yet.
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I feel bad for putting this much work into it. >_>
EDIT: Now at 1.00a. Phantasm Stage added.