The official YouTube channel for singer-songwriter tei posted a music video for their latest song " Hira-yori Raiya, Sara-riya Takaki," which is now featured as the opening theme for the fall 2025 TV anime My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I'm Out for Revenge! tei "Hira-yori Raiya, Sara-riya Takaki" Music Video My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I'm Out for Revenge! Creditless Opening Video tei has been active under two names: mini-harp singer-songwriter Tei Hinoto, and anime song composer and singer tei, Under the name tei, they previously provided theme songs for Tsurune (2023), The Weakest Tamer Began a Journey to Pick Up Trash (2024), and Unnamed Memory (2024). "Hira-yori Raiya, Sara-riya Takaki" is now available on digital platforms for streaming and download. "Hira-yori Raiya, Sara-riya Takaki" digital jakcet tei artist photo RELATED: Backstabbed in a Backwater Dungeon Anime Main Trailer Previews Tei Opening Song The TV anime adaptation of the fantasy light novel series My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I'm Out for Revenge! created by Shisui Meikyo (story) and tef (illustrations) premiered in Japan on October 3, 2025, and HIDIVE is also streaming the series in the United States. Katsushi Sakurabi ( Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion ) directs the anime at studio J.C.STAFF, with series composition by Hiroshi Onogi ( Fullmetal Alchemist: Brotherhood ), character designs by Yukie Suzuki ( TSUKIMICHI -Moonlit Fantasy- ) and music by Ryo Takahashi ( WIND BREAKER ). Yoshikazu Iwanami serves as sound director. HIDIVE describes the story as such: Light’s story should have ended after his party betrayed him and left him to rot in the deepest bowels of the dungeon known as the Abyss. But when the true power of his Unlimited Gacha skill awakens, he gains the ability to summon level 9999 items and allies. Now the young adventurer will rise from the depths of despair to seek revenge against the world and the party that had wronged him. Source : tei official YouTube channel
