The anime's official website Backstabbed in a Backwater Dungeon: My Trusted Companions Tried to Kill Me, but Thanks to the Gift of an Unlimited Gacha I Got LVL 9999 Friends and Am Out for Revenge shared this August 26 a main trailer showing new scenes and revealing the opening theme performed by the singer-songwriter Tei.
The trailer includes the voices of the characters mei (Ikumi Hasegawa), Nasuna (Hana Hishikawa) Aoyuki (Shiori Izawa), ellie (Ayumi Mano), Nemumu (Yuko Natsuyoshi) and Gold (Katsuya Miyamoto), in addition to highlighting the strength of the opening song.
Tei and his return to the anison
Teialso known as Tei Hinoto As a songwriter, she has been active in the industry under different names. In the field of anime, he has participated in productions such as Tsurune (2023), The Weakest Tamer Began a Journey to Pick Up Trash (2024) and Unnamed Memory (2024). His new song will be released digitally on October 4.
The artist commented that she sought to reflect in the song the Light's determination and desire for revengethe protagonist, as well as the strength necessary to guide the story beyond simple empathy. “I hope this song reinforces the heart of the plot,” he said.
Premiere and production details
The anime will premiere in Japan on October 3, 2025 (04:00 on October 4 in Spain) and adapts the light novel series written by Shisui Meikyo and illustrated by teff. Production is carried out by JCSTAFF under the direction of Katsushi Sakurabiwith series composition by Hiroshi Onogicharacter designs Yukie Suzuki and music from Ryo Takahashi. The sound design will be in the hands of Yoshikazu Iwanami.
Brief synopsis of the story
The story follows lightwho is betrayed and expelled by his former companions from the “Concord of the Tribes”. On the verge of death, he ends up at the bottom of the Abyssthe most dangerous dungeon in the kingdom. There he discovers that his magical ability, the Unlimited Gachacan now summon level 9999 warriors. The first to appear is meia powerful fighter dressed as a maid.
As three years pass, Light builds his own kingdom deep in the dungeon and gathers an army of loyal female warriors. Now turned into a Level 9999 Overlordprepares to return to the surface and execute his revenge against those who betrayed him.
