Hokushin Ittō-ryū (school of swordsmanship founded by Chiba Shūsaku ca. 1820)
Earth Dragon (5th term of the sexagenary cycle, e.g. 1928, 1988, 2048)
Boshin War (Japanese civil war between Imperial and shogunate forces; 1868-1869)
cinnabar; cinnabarite; cinnabar lacquer; cinnabar lacquerware
the Sun, the Moon and the stars; the heavenly bodies
Wood Dragon (41st term of the sexagenary cycle, e.g. 1964, 2024, 2084)
celestial bodies; stars; bright star used for timekeeping (e.g. Sirius); Mercury (in ancient Chinese astronomy); Chinese "room" constellation (one of the 28 mansions)
lucky day; auspicious occasion
Water Dragon (29th term of the sexagenary cycle, e.g. 1952, 2012, 2072)
Metal Dragon (17th term of the sexagenary cycle, e.g. 1940, 2000, 2060)
lucky day; auspicious occasion; happy day
Fire Dragon (53rd term of the sexagenary cycle, e.g. 1916, 1976, 2036)
timepiece; clock; chronometer
Japanese invasions of Korea (1592-1598); Imjin war