[Fun Fiction + Worldview Clash + Harem] That year, thanks to two hundred episodes of "Approaching Science," Rosser became a famous exorcist in Shinjuku. Initially, he just wanted to easily earn 100 million yen, then go back to his hometown to get married and never come to Tokyo again to avoid being beaten to death by his victims. But when the evil spirits actually came, and he blew up the school building with his made-up spells, he realized, "So I'm a god?" Rosser grinned maniacally. "In this world of evil spirit crisis, your savior has arrived." First, he'd transform into the Abyss-Eyed White Dragon, giving the world a little dragon-related shock. Then, he'd shift the blame, create a high-spec Type-Moon game, connect it with FGO next door, and whoever loses becomes a Lostbelt. Add some subspace, Cthulhu, and fight fire with fire... Crossover characters: Stop! And so... Goetia: Your Beast Law is... wait, what the heck is the Law of Cycles? Gudako: Mashu, could it be that our world is the Lostbelt? Anime Crossover World: Please, please, switch back to the evil spirit! I don't want the Cthulhu dimension! Sakayanagi Arisu: He didn't treat me like a cripple, nor did he treat me like a human being. Kazuma & Ayanokoji: Commander Rosser is my faith, my loyalty! Yukinoshita: Brother-in-law, won't my sister be angry if you do this? Tokisaki Kurumi: You scumbag god, watch me exhaust you with my three thousand clones!

Transmigrating to a crossover anime world, Rosser finds himself a demon hunter, his landlord is Kayako, and his neighbor is Yotsuya Miko... Is Conan a mystery with an instant-death rule? Help! Where's the Counter Force? Where are the Heroic Spirits? Oh, they're just standing by and watching me die. What, I have a cheat code? But then again, you can only rely on yourself. I'm going to create... a new type of Moon! First, I'll transform into the Abyss Eye White Dragon, create a WarGreymon to give the world a little dragon-related shock, and you'll see, isn't that a dragon? Then I'll create a Five Holy Grail War world, making all the exaggerated descriptions come true, connecting it to the FGO world next door, shifting the blame, and whoever loses becomes a Lostbelt. Type-Moon people: Stop!! And then... Saber: You're Arthur too? What do you mean by "the strongest because the strongest is the strongest"? Goetia: Your Beast Law... wait, what the heck is the Law of Cycles? Gudako: Mashu, could it be that our world is the Lostbelt? Kazuma and Ayanokouji: Commander Rosser is my sun, ah, praise the sun. Poor Xiangzi: Mr. Rosser, a maid's duties don't include anything else~ Tokisaki Kurumi: You scumbag god, watch me exhaust you with my three thousand clones! Also known as "The Birth Diary of the Servant Universe" and "Slaanesh's Daily Life of Having Fun".