I like to imagine that Rei Hino has a funeral for the Socialist Federal Republic of Yugoslavia in April 1992 at her shrine and she invites her friends to honor that country.
That is what I would do if I was old enough to remember the SFRY.
I like to imagine that Rei Hino knows about Croatia and the Ustashe because Rei went to Catholic school.
https://www.latimes.com/archives/la-xpm-1992-04-28-mn-977-story.html