I doubted i was gonna do it on my first try so i went with the worst character in the game for fun: Marisa. Reimu has better focused attacks, Sanae has better bombs and even Youmu's sword slices can come in handy. The load screen took more than usual and, out of nowhere, the music came back. It wasn't any TD song and, unlike any other tune in the series, this one was playing in reverse for some reason, making my head hurt after a while.
https://files.catbox.moe/mx3m94.mp3

If the song didn't make me uneasy enough, Marisa's portrait was covering the screen as if in the middle of a cutscene, however it never went away. There were no enemies, no spirits to fill up my trance gauge, just an empty stage where the only thing driving me insane was the melody and Marisa's censored, mouthless face.

Even if this was a mod or whatever, i was feeling too weirded out by the whole thing and wanted to exit the game immediately. Pressing ESC and expecting the usual pause menu, i am instead greeting by a message in red, flashing on the top left part of the screen: "no escape"

Alt+tab wasn't working either so i decided to turn off my pc, however just as my finger was hovering over the power button, a familiar face showed up...