I Was Kicked Out of the Nasuverse [Mainly Saiki K.]

In her previous life, she was the young heiress of a family of magicians in another world. After destroying herself along with the hateful world that had brought her into existence and then taken everything she loved, she became a great vengeful yokai and returned to the world as the legendary "Shiranui"! ...However, while gravely wounded, she accidentally stumbled into the FGO world, set in the Nasuverse, and was forcibly bound to the Throne of Heroes by the damned Gaia and Alaya. "Damn it!" [Break free! The girl, a great yokai trapped in the Throne of Heroes!] The girl returned from revenge, ready to destroy countless worldlines to punish greedy humanity and the world she despised. She would set the most dazzling flames ablaze! [Tremble, Alaya and Gaia!] [The ultimate avenger, "Shiranui," with special attacks against the world, worldlines, and humanity, has ripped open a passage with her true body and fought her way down from the Throne of Heroes!] So... Here's to freedom! Here's to the flames! Let's celebrate! The five-star bonus Servant from another world, merrily burning every worldline she can't stand with mysterious magical flames powerful enough to destroy the world... Miss Shiranui! Descends! The God of the 2D World has run into the worst situation since birth... A skirt that flips up is guaranteed to show panties; telepathy keeps cutting in and out; X-ray vision completely fails against certain beings; three, four, five... eight, nine strange special admissions classes have appeared out of nowhere at the academy; people all over the world have started thinking that having superpowers is cool; and because of the strange special admissions students, PK Academy has become one of the most talked-about schools around! A complete disaster: the everyday life of a gag anime has collapsed! And that's not all. A world thrown into chaos by sheer panic has entrusted him with an enormous problem he can't escape. Today's Saiki is exhausted as ever... [Wait a minute. The Gintama class, the Rabbit class, the Italian class, the Yokohama class, the Chaldea class, the Shinto class... How did these special admissions classes that don't belong at PK Academy get here?] [Ah, what a pain.] - The everyday gag anime has evolved into a romantic comedy! The daily life of a psychic has collapsed! Key points: Guaranteed daily updates! CP: Miss Shiranui vs. the God of the 2D World (Kusuo A-Doraemon) (The Saiki Kusuo world is the main setting. Other anime worlds, including Bungo Stray Dogs, Gintama, Nurarihyon no Mago, The Prince of Tennis, Kuroko's Basketball, Fate, Katekyo Hitman Reborn!, Touken Ranbu, and Natsume's Book of Friends, are reimagined as special admissions classes at PK Academy!) Warning: Everyone is OOC! A lighthearted, nonsensical school-life fluffy romance... (Just kidding! It's a hot-blooded battle anime!) - - Theme: Everything that was lost will eventually return in another form