5th episode of spinoff anime to be included in 3rd BD volume on March 24

Bandai Visual began streaming the fifth episode of the Comet Lucifer television anime's spinoff SD Flash anime "Garden Indigo no Shasō Kara" (From Garden Indigo's Window) on Sunday. The episode features the characters Sōgo Amagi, Moura, and Felia explaining the story's Bipedal Armor, originally developed for mining Giftjium. The episode further explains that after Giftjium powered frames, development of Bipedal Armor movement became much more precise, and Armor operation became more energy efficient. The video notes that its eventual military usage was inevitable. The Valov family reaped huge financial rewards with the Bipedal Armor, and eventually came to govern Garden Indigo.

This episode will be a bonus extra on the third Comet Lucifer Blu-ray Disc volume along with a Blu-ray exclusive episode 6 on March 24. Episode 1 will be available along with the Blu-ray-exclusive episode 2 in the anime's first Blu-ray Disc volume on January 29, while episode 3 will be available with the Blu-ray exclusive episode 4 in the second volume on February 24. Bandai Visual streamed the SD short's first and third episodes in October.

The main TV anime series premiered in Japan on Tokyo MX on October 4. Sentai Filmworks has licensed the series, and Crunchyroll is streaming the series as it airs.

The story takes place on the planet Gift, where precious crystals called Giftjium are buried in the earth. A young man named Sōgo lives in Garden Indigo, a prosperous mining town. Sōgo's hobby is to collect rare crystals. One day, he gets wrapped up in a riot caused by his classmates Kaon, Roman, and Otto, and he loses his way until he finds a lake deep under the ground's mining ruins. There, he meets a mysterious girl with blue hair and red eyes that gaze straight ahead. The story follows the adventure of what happens after this meeting.