>>40506726
Well, beaches are liminal spaces, neither land nor sea.
https://odradeksjourney.wordpress.com/wp-content/uploads/2018/04/the-beach-as-a-liminal-space.pdf
https://shinzabansho.fandom.com/wiki/Twilight_Beach
>Twilight Beach (黄昏の浜辺 , Tasogare no Hamabe) is a unique location outside of time and space where Marie's soul resides.
>As her inner world, it can only be access by outsider via special connection like Ren Fujii or opening a Singularity.