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.)

I was reborn into another world, starting as an unknown duke's son. I began to distinguish myself in my first year of university, developing a complicated relationship with a princess. I also discovered other transmigrators and learned about various cultures: beast-eared girls, elves, succubi, and, importantly, dragon knights. Ultimately, I built a nation in this other world where different races lived in peace.

"Heavens above, please let me pull Gilgamesh!" Yue Chen knelt on the ground, frantically pressing the ten-pull button. He'd stumbled upon a system, thinking it would be the moment his mundane life would burst with color. However, this system was a bottomless pit. Want to get stronger? Sure, spend money. No money? Want to get stronger without money? Yue Chen cried out. "Singer, there are so many people on that stage, I want to go and show off my singing too!" Wait, Your Majesty! You'll kill someone! "Mommy, I want to eat." Sweetie~ Jack, tomorrow I'll take you to the wilderness survival show crew. "Oh! Power!" Whoa! A muscular man in a straitjacket jumps out! Yue Chen's future is unpredictable.