|???||After an attempt of suicide, for betraying his master, Karin Yuuki discovers she had become immortal.|
|Around Year 686||After eating the flesh of a mermaid, Jinbei Shishido becomes an immortal.|
|Year 1386||Evangeline A.K. McDowell is born.|
|Year 1386||Evangeline A.K. McDowell at age 10 is turned into a vampire.|
|Year 1988||June 30: Sayoko Minase is born.|
|Year 2001||Ikkuu Ameya is born.|
|Year 2003||September 23: Sayoko Minase dies at age 15.|
|Year 2014||Ikkuu Ameya falls into a comatose state at age 13.|
|Year 2020||The Orbit Elevator construction is finished.|
|Year 2072||Kuroumaru Tokisaka is born.|
|Year 2075||Honoka Konoe and Isana Konoe are born.|
|Year 2078||June 17: Santa Sasaki dies at age 12.|
|Year 2082||Touta Konoe is born (according to UQ Holder database).
January: Kuroumaru Tokisaka take part in an Immortalization Curse as a test subject and becomes an immortal.
|Year 2084||July 27: Touta Konoe's parents dies.|