Talk:Re:Zero Light Novel Volume 13/@comment-30059082-20170704080358

I’m not a native English speaker, so I’m really interested in the meaning of the 7th chapter definition.

“The Stone of Kuwen won't Rise for One Person”. What is Kuwen? Is it from Latin or some other language? What does the whole phrase mean? Is it a kind of English idiom? If so, than what is the origin?