Seimei woke up to find himself transported to a world of anime and manga. Good news: he was also bound to a system essential for any transmigrator. Bad news: this world wasn't just infested with evil spirits and monsters, but also with various urban legends, like the Slit-Mouthed Woman, Sadako, Kayako, and Hanako in the Toilet… However, thankfully, after binding with the system, Seimei became a legendary Onmyoji. He not only possessed powerful abilities but could also summon various shikigami to fight for him! His goal was to become the strongest Onmyoji and, at the same time, build a grand empire! …Yotsuya Miko: I only feel safe when I'm by Seimei-sensei's side. Ebina Nana: Seimei-sensei, please don't do this here… um… Kasumigaoka Utaha: Hmm~ Seimei-kun, do you prefer white or black? Nakiri Erina: Now it's my turn to taste you. Kirigaya Suguha, Asuna, Shinomiya Kaguya, Fujiwara Chika, Eriri, Suoh Yuki…

"Do you know the correct way to use the Mystic Eyes of Death Perception?" "Precise attack lines and points?" "No, no, no~~~" The young man waved his hand and pulled out a rocket launcher from the cello case on his back... This is a story that singles out high schools from various anime and game works, focusing on battles, "romance," battles, dark sides, pseudo-daily life, true apocalypse, and mutual sabotage. These include, but are not limited to, *Private Fujimi Academy*, *Jinshiro High School*, *Private Ashford Academy*, *Koh Academy*, *Mahora Academy*, *Totsuki Academy*, *Tokiwadai Middle School*, *Nagatoshi Academy*, *Prefectural Misaki High School*, *Homura Academy*, *Sayanan High School*, *Toyonosaki Academy*, *Private Paradise High School*, *Crows Zero*, *Toudou Academy*, *Shohoku High School*, *Karakura Daiichi High School*, *Ouran High School Host Club*, and many more. Can you recognize which works these high schools are from?