I really don't recommend this to other people looking for speedkill. You'd be better off going for 3 turn instead. This is waaaaayyyyy too RNG for my liking. The reason I did it because I wanna see if its possible without Danu's Wisdom.
For starter, the opener and starting demon is a must imo. Dont use Chaotic Will, Mirage Dodge is more than enough. You want to get debilitated by Hariti. Here is probably the biggest Rng and the one you want to reset the most, Hariti needs to debilitate you, if she doesn't do it, reset. Having an extra turn is important.
You will start with 7 turn here. Change to Nahobeeho because his innate slightly reduce magatsuhi consumption after activating. Go strategize immediately. I like to flip my debuff first with Amanozako and then reduce my defense so my Black Ooze can die from his counter attack. Yes he didn't die one time when def is -1. After that pay attention to your press turn if its blinking or not.
When blinking, use Loa+Virus Carrier user. The reason you wanna use ailment is to suicide your demons when ailment land on Satan since he counters them with Adversary. Loa innate allows others to inflict ailment easily, meanwhile Virus Carrier doesn't reduce your press turn in omagatoki if you managed to inflict an ailment. Halphas, Sudama, Black Ooze, Fafnir and Mad Gasser has Virus Carrier. I had to lvl all of them to 99 just to be able to inflict an ailment. I also bump their ailment potential to +7 because I had those lying around. You CAN deal with it on their normal potential but I'm just too lazy with RNG fest. The early debilitate opener made me reset way too much to my liking.
I prioritze any ailments besides sleep for it to land. OK, you can deal any ailment like sleep and all that but honestly the only ailment thats safe to land on Satan is poison. I'm not sure about seal and mirage, but I'm not taking any chances. Its better to land ailments on Titania or Hariti but you can't avoid much with aoe ailments.
If two of your ailment demon didn't land ailments and you have one more ailment demon, don't use evergreen dance and hope for the best for the last demon to land it. If the three of them didn't land, honestly I just reset. Your aim is to fill up Magatsuhi bar to full to perform Vile+khonsu for impalers glory.
Also, if your press turn isn't blinking, make it blink before the ailment like scoring crits. I was using Artemis huang long here to score crits because its basically another big damage multiplier just in case I got lucky with all ailments landing. Alas, she was just there just to score press turn and Huang Long multiplier didn't get used.
If your Gog has around 140 strength and if after all the setup with vile and Khonsu AND you have 4 press turn, you basically win already. I put quite a bit of incense on Gog here to 154 but no incense Gog is possible, you just need to reset every lvl up he has to get him strength.
One turn Satan has been done but without Danu Wisdom, I think its impossible.
Good luck to all wanting to try this madness.