I'm doing a crossover anime/manga project, and I'm creating a new kind of "Moonlight&

After transmigrating to various anime worlds, Rosser finds himself a demon hunter, his landlady 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 sitting next door watching us die.
What? I have a cheat code? Then again, you can only rely on yourself. I'm going to... create a new type of moon!
First, transform into an Abyss-Eyed White Dragon, then create a WarGreymon to give the world a little dragon-like shock. Tell me, isn't that a dragon?
Create another world of the Fifth Holy Grail War, with all the exaggerated descriptions coming true, connecting it to the neighboring FGO world, shifting the blame eastward, and whoever loses becomes a Lostbelt.
Type-Moon People: Stop it!!
then.....
Saber: You're Arthur too? What do you mean by "Curry Stick is the strongest because he's the strongest"?
Goetia: Your Law of the Beast... wait, what the hell is the Law of the Circle?
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, the duties of a maid do not include anything else~
Kurumi Tokisaki: You scum, watch me exhaust you with my three thousand clones!
Also known as "The Diary of the Birth of the Servant Universe" and "Slaanesh's Daily Life of Having Fun".