Rampaging Spirits in the Capital City!? (A Project SEKAI au)

For her school fieldtrip, Airi travels to the famous Kyoto with her classmates. Airi, is of course, having a great time looking around Kyoto with her friends, until an unexpected and pandemonium turn of events occur and she must save Kyoto from destruction. Alongside her and what she must fight, some rather peculiar yokai..

Based off of the "A Once-In-A-Lifetime Pandemonium!?" event from Project SEKAI/HATSUNE MIKU: COLORFUL STAGE!, also based off of Undertale and Twisted Wonderland a bit.
REMINDER: I DO NOT OWN THE CHARACTERS, NOR DO I OWN PROJECT SEKAI/HATSUNE MIKU: COLORFUL STAGE!, UNDERTALE, OR TWISTED WONDERLAND. I ONLY (possibly) OWN THE AU.