Kanon (2006) is my "better than the source material" gold standard of VN adaptations, and if you make any cracks about the art style or talk cynically about nakige tropes and not wanting to be made to feel things, we will not be friends. It influenced me a LOT.
Something to do with hell, with enough haters to be upset... I don't think it's Shin Megami Tensei: Devil Children, but I'm gonna say it's Shin Megami Tensei: Devil Children. ("They said last stream no more kids' shows that haven't been subbed before --" Shh, I can't think of anything.)
Dororo (the old black-and-white version)?
Trains and poison... Baccano?
Wanna-Bes?
The text suggests it's going to be another side title (Toku Time, Nihon Nights, or Western cartoon), so I'm gonna go with the third -- is it Creepy Crawlers?
Fighting in a street market... You have the Nanoha franchise... It's the Triangle Heart 3 OVA!
Back in the day it was those last two single volumes of Rozen Maiden, which barely came out once Geneon wound down and went out of business. People to this day still believe they were never released. Thankfully the series has a recent rerelease.
Last but not least is a tradition of mine - the Original Valor Adventure Workshop! I’ll help your crew come up with a self-contained anime premise and characters, then do a short and sweet minicampaign - self contained, like an OVA series! startplaying.games/adventure/cl...
Valor: The Heroic Roleplay System is hands-down my favorite RPG, and I'd like to show you why! Join us for the Build an Anime Workshop - where I'll walk you through making a setting and characters an...
oh nooooooooo