Aired: 8/5/2005
The original story of a terminally ill young man and Setsumi Sakura on the 7th floor hospice, embarking on a final road trip.
Aired: 5/15/2007
Prequel focusing on Himeko, a former helper turned patient, and her summer encounter with Setsumi.
Aired: 1/27/2016
Direct follow-up to Side 2nd, wrapping Himeko's arc.
Aired: 4/18/2016
Standalone side story in a medieval-like setting, exploring desires to live or die.
Aired: 8/12/2016
Prequel origin of the 7th floor hospice rules in 1970s Japan, following two kids and the wall between the living and dying.
Aired: 3/11/2017
New tale of two girls—one dying, one desiring death—filled with regrets and profound encounters.