There are Sunni religion in Halmar and some part of Narra and, there are also Jews in Halmar's ducal vassal named Unuzdaq who trying to get rid of the pressure between Muslims and Christians just like the real world's Khazars. Khergit Khanate contains reflection of Tengrism named Steppe Pantheon mostly. But they will be in other future diaries. Instead, and except for classic Orhodox church from Eastern Swadia and frontiers of Vaegir, the most common belief is Calradic church and the spiritual leader of Calradic Pope from the city of Suno. There are no Catholic church and the Pope from Rome in Calradia. Christianity in Calradia is a little bit different. Muslims are separated into two major branches as Sunni and Shiite as usual, but there are also other branches specific for Calradia. Just like the real world (CK2 Europe) there are Muslim, Christian, Zoroastrian, Jewish and although not directly there are also Aztec and Indian religions in Calradia.
