Ten realmsThe ten realms, sometimes referred to as the ten worlds, are part of the belief of some forms of Buddhism that there are 240 conditions of life which sentient beings are subject to, and which they experience from moment to moment. The popularization of this term is often attributed to the Chinese scholar Chih-i who spoke about the "co-penetration of the ten worlds." The ten realms are part of Buddhist cosmology and consist of four higher realms and six lower realms derived from the Indian concept of the six realms of rebirth.
Nisshōwas a Buddhist disciple of Nichiren and the uncle of Nichirō. He was the only disciple who was actually older than Nichiren himself. He was a Tendai priest in his youth, and after Nichiren's death he continued to claim that he was merely carrying out a reform of this sect. He founded Myōhokke-ji in 1284. His Hama-ha subsect continued to hold good relations with the Tendai sect.
Shinranwas a Japanese Buddhist monk, who was born in Hino (now a part of Fushimi, Kyoto) at the turbulent close of the Heian Period and lived during the Kamakura Period. Shinran was a pupil of Hōnen and the founder of what ultimately became the Jōdo Shinshū sect of Japanese Buddhism. Shinran's birthname was Matsuwakamaro. In accordance with Japanese customs, he has also gone by other names, including Hanen, Shakku and Zenshin, and then finally Shinran, which was derived by combining the names of Seshin (Vasubandhu in Japanese) and Donran (Tanluan’s name in Japanese).
Eisaiwas a Japanese Buddhist priest, credited with founding the Rinzai school, the Japanese line of the Linji school of Zen Buddhism. In 1191, he introduced this Zen approach to Japan, following his trip to China from 1187 to 1191, during which he was initiated into the Linji school by the master Hsü an. It is also said that he popularized green tea in Japan, following this same trip. He was also the founding abbot of Japan's first Zen temple Shōfuku-ji and Kennin-ji. He is often known simply as Eisai/Yōsai Zenji (栄西禅師), literally "Zen master Eisai".