Amamiya Yoru accidentally transmigrates to a world where the myriad realms are just beginning to appear. Various monsters and characters from these realms are beginning to emerge. Fortunately, along with her transmigration, Amamiya also obtains a system called "Myriad Realities Role-Playing." By gaining fame through this system, she can draw various characters to role-play! Her first role-playing is Gilgamesh, the King of Heroes from the Type-Moon universe! King Arthur! Karna! Zhongli! and many other characters. Thus, Amamiya begins to role-play all sorts of characters, and the characters she portrays gradually become renowned throughout the world! (This leans towards crossover anime/manga; multiple anime/manga characters will appear later.)

Lin Ming has been in this world for sixteen years, always believing it to be an ordinary one. He copies novels, saves up small amounts of money, and dreams of a simple and happy life with female seniors on his left and female juniors on his right.

It wasn't until he stepped into Kuoh Academy and saw Toujou Koneko's cat ears, Himejima Akeno's lightning, and Rias's destructive magic... that he realized with despair that this was "High School DxD," a place where people could die! The aftershocks of the mystical powerhouses fighting could obliterate him.

In a moment of crisis, the Infinite Dimensional System awakens: Afraid to become stronger? Newbie quests force you to make extra-long confessions to three popular heroines! Too afraid to take risks? Then traverse countless worlds for forced training!

"Anime crossover, fun-loving heroine, heartthrob"

Numb, the true god Yu Jiang Chaluo created a system in order to find some fun. She originally wanted to experience an idol drama, but she accidentally turned it into a two-dimensional world.

Please, Yu Jiang Chaluo, who is born without emotions, has captured the hearts of countless handsome men here. System? Not at all! Use your looks if you have them, use your intelligence if you have it, and you can take any man you want!

Yu Jiang Cha Luo: Wow, you guys really cried?

Even a wicked woman can easily kill everyone using the "white moonlight" tactic!

(I don't even know what I'm writing in this introduction. It's not very convincing. Please move on to the main text.)