Complex sentence: In Rethwellan, it is considered highly taboo, and the dominant religious cult in the kingdom seems to very actively persecute it, and this cult also seems to usually include one or more members of the royal family, up to and potentially including the King.
Split into simpler sentences: In Rethwellan, it is considered highly taboo, and the dominant religious cult in the kingdom seems to very actively persecute it. This cult also seems to usually include one or more members of the royal family, up to and potentially including the King.