Daughter of Time: Part 1

Daughter of Time: Part 1
Ultraman Cosmos, episode 13
Information
Airdate	September 29, 2001
Directed by	Masaki Harada
Written by	Ai Ota
Special Effects Directed by	Masaki Harada
Viewer Ratings	5.3%
Continuity
Previous	The Organism of Light
Next	Daughter of Time: Part 2

Daughter of Time: Part 1 is the thirteenth episode of Ultraman Cosmos.

Synopsis

A girl named Reni is being hunted by a mysterious space lifeform. She worked as part of the construction crew of the habitation space station Germina III and supposedly died in an accident on the job. Upon investigating her medical data, a shocking truth is revealed...

Cast

• Musashi Haruno : Taiyo Sugiura
• Harumitsu Hiura : Daisuke Shima
• Shinobu Mizuki : Kaori Sakagami
• Keisuke Fubuki : Hidekazu Ichinose
• Koji Doigaki : Koichi Sudo
• Ayano Morimoto : Mayuka Suzuki

Guest Actors

• Reni Kurosaki : Hitomi Miwa
• Azusa Niimi : Kayano Komaki
• Hiroko Honda : Keiko Hiro
• Professor Seki : Sumimaro Yoshimi
• Dr. Migita : Masakazu Migita

Voice Actors

• Ultraman Cosmos : Hiroyuki Sato
• Narration : Hiroshi Isobe

Suit Actors

• Ultraman Cosmos: Hiroshi Nekomata
• Waroga : Tomohiro Nagata
• Galbas : Kazunori Yokoo

Appearances

Ultras

• Ultraman Cosmos
  • Luna Mode

Kaiju

• Waroga
• Galbas

Home Media

• Ultraman Cosmos Volume 4 features episodes 13-16.

Trivia

• The episode's title echoes the English proverb "Truth is Time's daughter'"
  • Producer Hiroyasu Shibuya explained that, since episodes 13 and 14 conclude the first quarter, he wanted to depict Musashi’s struggles and rebirth. The core themes of the Ultraman Series are "strength and gentleness", with Cosmos placing greater emphasis on gentleness. However, this focus required the expression of certain contrasting traits. Taking these elements into account, Ai Ota proposed the concept for this episode.
  • Although Waroga is evil, defeating him would mean killing Reni, making the battle one of painful choices. While there were concerns that such themes might be too intense for Cosmos, Shibuya believed that the characters needed to face the weight of reality in order to truly grasp the meaning of their dreams. These ideas were deliberately woven into the story.
• As one of many selected to celebrate the Ultraman Series' 60th anniversary, this episode was made available on the Ultraman YouTube channel from November 12, 2025 for two weeks, following November's theme of "The Story of Hope."