The Christmas Special aired in December 2000 and featured Piyoko again attempting to capture Dejiko by inviting all the characters on a cruise. (Source: Wikipedia)

8-year-old Hiyori, who lost her parents, and Yui, seeking to escape her violent father, got off at a Kitsunezaki station one day. The great earthquake and tsunami had changed their destinies. Their lives were saved, but they were perplexed when asked about their identities at an evacuation site. It was an old woman named Kiwa Yamana who lent them a helping hand. From that day, Yurie was known as Yui, Moeka as Hiyori, and together with Kiwa, the three women began a wonderful communal life together at the old house Mayoiga overlooking the sea.

Second season of Ao no Miburo.

In the aftermath of a great and terrible war, Haruka finds herself the last surviving human on Earth. Though humanity may have been wiped out, she is not entirely alone. Advanced robots have survived the apocalypse, and Haruka lives with five who care for her: Spike, a boyish android who is very attached to her; Trigger, hot-tempered with a penchant for firearms; Cleric, the intelligent problem solver; Reeves, whose thoughtfulness overshadows his intimidating appearance; and Angela, a sword wielding recluse with an aversion towards humans. Residing in a high-rise building at the center of the city, Haruka lives a relatively peaceful life with her mechanical family. However, her life is far from a stable one. Not only is a lack of resources a concern, but violent, remnant robots from the war roam free, ready to destroy whomever they meet. Kurogane Communication follows Haruka as she tries to survive in an apocalyptic world while facing many dangers that will challenge her daily life.