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.)

My name is Luo Chen, and I traveled through time.

That's right, I was just an ordinary Hyperion deck cleaner. But why did I end up in the world of Honkai Impact 3rd? I can live with these familiar girls, but is this really the Honkai Impact 3rd I know? How could this be so outrageous!

The Silent Bookstore, a library perched on a small island in Cornwall, houses countless secret teachings and profound techniques. After a devastating fire, the entire bookstore was deserted and sealed off until a new librarian took office on a stormy day. Uesugi Sumi, a reincarnated individual, not only found himself in a world pieced together from numerous anime series, but also became a survivor of a shipwreck brought by the storm in another world. He successfully took over the Silent Bookstore, inheriting the library's resources and knowledge. To repair his bookstore, he decided to cultivate his own "tools" to make it easier to get freebies. Yotsuya Miko: He's a good person, though sometimes he doesn't seem quite human. Hikigaya Hachiman: A good person, but not entirely good; at least sometimes he doesn't seem like a good person to his friends. Goto Ichiri: A terrifying person, but very kind. Faced with these assessments, Uesugi Sumi, a master of nine arts, a master of initiation, a master of medicine, and an all-around worker, said, "Let's make friends... and get me a room while you're at it."