I can't completely deny Shinsen's words.

If you ask me why, it's because I know someone who feels the
same as him.

Kirigiri Kyōko — She also has the ability to sense danger and death
around her in advance. She explained this ability as ‘hearing the
footsteps of the Shinigami’. Although I don't know if it is actually a
sound that is perceived through hearing or not, but this kind of
ability in Shinsen seems to be a visual version of that.

And his senses are correct. The ruins of this hotel are not only the
site for brutal murders in the past, but also the stage for the
‘Black Challenge’, where murders may happen at any time