The Ryukyuan religion (琉球信仰), Ryūkyū Shintō (琉球神道), Nirai Kanai Shinkō (ニライカナイ信仰), or Utaki Shinkō (御嶽信仰) is the indigenous belief system of the Ryukyu Islands. While specific legends and traditions may vary slightly from place to place and island to island, the Ryukyuan religion is generally characterized by ancestor worship and the respecting of relationships between the living, the dead, and the gods and spirits of the natural world. Some of its beliefs, such as those concerning genius loci spirits and many other beings classified between gods and humans, are indicative of its ancient animistic roots, as is its concern with まぶい, or life essence. Over time, Ryukyuan religious practice has been influenced by Japanese Shinto, Buddhism, Confucianism, and Taoism. It has also been shaped by other Chinese religions (White Lotus, Chinese Manichaeism, and folk beliefs), along with Christianity. One of its most ancient features is the belief in おなり神, the spiritual superiority of women derived from Amamikyu, which allowed for the development of a noro (priestess) system and a significant following for yuta (female mediums or shamans). Ryukyuan religion, with its focus on demonstrating respect of and reverence toward ancestors, is naturally based in the family home. The oldest female relative acts as a primary celebrant, officiating rituals concerning ancestors, household gods and those family members who live both in and outside the home. Daily incense offerings are made and prayer "reports" are delivered aloud, in which each family member is described for the benefit of the incorporeal being addressed. The oldest female relative is also responsible for cleaning and upkeep of the buchidan (ancestors altar), hinukan (hearth god and his home on the hearth), and furugan (bathroom god). The Ultimate Ancestors, those from whom all life springs, are Utin ("Heaven", the father), Jiichi ("Earth", the mother), and Ryūgū ("Sea", the place from which we were born). They originate and exist, along with kami, or the gods of the world, during the Usachi-yu, the "Ancient Age".