Here are comments from Ryohgo Narita (original work author), Shinta Fujimoto (original work illustrator) and Manabu Ono (director / series composition) on the upcoming anime adaptation of Dead Mount Death Play, in that order, as shared on the official anime website (c.f. Staff section):
My dubious interpretations of the machine translations are under the cut (plus a bit of context and deprecating questions about word choice). I defer to Japanophones for better translations.
I am quite appreciative of Narita's explicit appreciation for this anime happening in the 20th anniversary of his debut. Meanwhile, I didn't appreciate enough until now that the DMDP anime will mark the first time something of Fujimoto's has been animated. That's even more reason to wish for the anime's success.
Context for Narita's comment: DMDP is a reverse isekai in which a protagonist reincarnates in someone's body in Shinjuku, Earth (another world). Narita is playfully invoking this premise.
Original Story Ryohgo Narita Anime! It's an anime! I am very happy to make this announcement! It's been 20 years since I made my debut, and the fact that Dead Mount Death Play has been reincarnated in the new world of anime is due in no small part to the blessings of our readers! I hope you will follow the growth of this work for many years to come.......!
Fujimoto context: Prior to DMDP, Fujimoto collaborated with Narita on a 2010s Baccano! manga. Prior to that, he wrote and published his original manga Red Raven, his most representative work.
Original story Shinta Fujimoto This is the first time a work I've been involved in has been adapted into an anime, so I'm very happy! Thank you to all the readers who've supported me this far! I am looking forward to seeing the characters in action and listening to the dialogues that I think will be fun to hear voiced. As a viewer, I am looking forward to seeing it.
Translation ??? on below: I cross-referenced several machine translation iterations, tweaked them w/the machines, and then took liberties in (re?)phrasing the whole bit about Ono screaming, seeeing the images, and thinking about DMDP for readability. I think the gist gets across, but I admit it doesn't quite reflect how Ono phrased it. JP doesn't have a strict sentence order, so... Eh, you get my gist.
Director/Series Composition Manabu Ono The other day I had a gastroscopy for the first time at a thorough physical examination. When the camera was inserted through my nose, I screamed, "Absolutely impossible!" in a monologue upon seeing the image of my esophagus and stomach on the monitor. "This will be a great reference for making Dead Mount Death Play!" I thought, in the midst of my suffering. I had undergone a purification and the results of my physical exam were good. I will do my best to create shocking drawings, action and horror!