The cast of Fiju Fiju - 2013 includes: Pavao Babic as Guy Katja Crevar as Girl Marin Mandir as Passer-by
Marin Mandir has: Played Stranger in "Pticja demokracija" in 2009. Played Zeljko in "Nepismen" in 2010. Played Horvat Bosnjakovic in "Police, Follow that Car" in 2010. Played Eusebius in "Tvoj susjed, Veselin Sljivancanin" in 2011. Played Haradin Skenderbeg in "Racak Incident... Part Deux" in 2011. Played Epikur in "Nostradamus-kokos" in 2012. Played Dean in "Facebook dvojnik" in 2012. Played Passer-by in "Fiju Fiju" in 2013. Played Police officer Petar in "Gmaz" in 2013.
You're probably referring to Koya-san. It's a mountain near Osaka sacred to certain Buddhists. http://en.wikipedia.org/wiki/Koya-san