The upcoming anime adaptation of Shisui Meikyo and tef’s light novel series, titled My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I’m Out for Revenge!, has revealed its opening theme song in a new main promotional video. The song, performed by Tei, will set the tone for the highly anticipated fantasy revenge series.
The anime, often shortened to My Gift Lvl 9999 Unlimited Gacha, is slated to premiere on October 3, 2025, and will be exclusively simulcast on HIDIVE in numerous regions, including the U.S., Canada, U.K., Ireland, Australia, and New Zealand.
Tei to Perform Opening Theme for “Unlimited Gacha”
Singer Tei has been announced as the artist behind the opening theme song for My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I’m Out for Revenge! The revelation came alongside the release of the anime’s main promotional video, offering fans a first listen to the track that will accompany the protagonist Light’s journey of vengeance.
Anime’s October 2025 Release and Streaming Details
My Gift Lvl 9999 Unlimited Gacha is scheduled to begin airing on October 3, 2025, on Japanese channels Tokyo MX, MBS, and BS11. For international viewers, HIDIVE has secured exclusive streaming rights for the series across multiple territories. An advance screening of the first three episodes is also planned for September 7 at Shinjuku Piccadilly Cinema.
What to Expect: Plot and Production
The anime adapts the light novel series by Shisui Meikyo, with character concepts by tef, which has been published under Hobby Japan’s HJ Novels imprint since May 2021 and currently has 12 volumes. A manga adaptation by Takafumi Ōmae is also ongoing.
The story centers on Light, a human boy who, despite being invited to a party of nine races called the “Assembly of the Races,” is betrayed and left for dead in the “Abyss,” the world’s most dangerous dungeon. Surviving the ordeal, Light discovers the true power of his “Unlimited Gacha” gift, which allows him to summon powerful Level 9999 allies. With his new companions, including the Level 9999 Seeker Maid Mei, Level 9999 Genius Beast Tamer Aoyuki, and Level 9999 Forbidden Witch Ellie, Light embarks on a quest for revenge against those who betrayed him.
Key Staff and Cast Bringing the Story to Life
The production of My Gift Lvl 9999 Unlimited Gacha is handled by J.C.Staff. The main staff includes:
- Director: Katsushi Sakurabi
- Series Composition/Script: Hiroshi Onogi
- Character Design: Yukie Suzuki
- Music: Ryo Takahashi
- Sound Director: Yoshikazu Iwanami
- Art Director: Yukiko Ashino
- Color Design: Tomomi Andō
- Compositing Director of Photography: Shingo Fukuyo
- Editing: Maki Sendo
- Sound Effects: Yasumasa Koyama
- Music Production: Lantis
The confirmed main cast members are:
- Light: Nina Tamaki
- Mei: Ikumi Hasegawa
- Nazuna: Hana Hishikawa
- Aoyuki: Shiori Izawa
- Ellie: Ayumi Mano
- Nemumu: Yūko Natsuyoshi
- Gold: Katsuya Miyamoto
Fans can look forward to an anime that combines elements of fantasy, action, adventure, drama, and magic, as Light builds his empire of strong players from the depths of despair.
