The anko was confusing to me, until I realized it was structured like yakuza eiga, or Japanese gangster film.
The yukkuri in Anko 847 aare yukkuri gangs. Gesu Myon (the youmu with the Glasgow smile and the brickshitting Mister Sword) in particular is a reference to the psychotic characters in those movies (Kakihara in Ichi the Killer), while Gesu Mukyuu seems to be the brains of their gang, the Gesufamilia.
post #38041 seems to be the fallout after the humans stepped in to intervene, with disastrous consequences for everyone.
Never before have I wished to be more competent in Japanese so I can give more than half-baked summaries.