Dou Shen Ji
English title: Ancient Girls Frame
Japanese title: 斗神姬
Alternative titles: Toushinki G's Frame, 闘神機ジーズフレーム
Type: ONA
Source: Original
Episodes: 12
Status: Finished Airing
Aired: Oct 11, 2021 to Dec 20, 2021
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Seven Stone Entertainment, TrioPen Studio
Producers: bilibili, Youku
Genres: Action, Sci-Fi
Themes: Mecha, Space

At the end of the 21st century, the discovery of a new energy source called "DG energy" (short for "divine grace energy") has revolutionized Earth's economy and allowed humanity to colonize space. However, when the initial expedition reaches Pluto, they are attacked by a mysterious, giant life-form known as "Nergal."

The Earth Alliance Army fights back by creating an "AG Unit" using ancient robot weapons known as the "G's Frame" which were excavated from archaeological sites all around the world. Girls with special qualities known as "Ancient Girls" can pilot these robots against the Nergal. However, the first AG Unit suffers heavy casualties in the Jupiter Trojan campaign, and the pilot of Unit 04, Minamiya Reiu, goes missing-in-action...

Years later, Minamiya Reika, the younger sister of Reiu, enlists with the AG Unit to search for her sister and to protect the Earth from the Nergal. A story of friendship, ancient robot weapons, and battles to the death with the Nergal ensues.

(Source: Crunchyroll News)

The Japanese broadcast was scheduled to begin on October 12, 2021 on Tuesdays at 7:00 p.m. on Tokyo MX, followed by BS NTV.