Found a bug.

[Yukashi]

Using Dancer's Strike on the last step of the entrance of Kyoto causes you to fall through the map

[Otonashi]

Many floors and walls can be glitched through by rolling or using dashing skills / skills that propel you into the air. Not really a bug, or rather there are so many of these due to how the game is designed that it (probably) isn't worth it to fix.

[Lynneth]

Some Kyoto walls/bridges and fence are easy to penetrate, especially with idaten's on. It's a safe way to reach save point.