New anime "Muchuu sa, Kimi ni." opening theme by Keina Suda, ending theme by Daiki Yamashita × Tasuku Hatanaka
The opening theme for the TV anime "Muchuu sa, Kimi ni.," which will begin airing on August 21 on TOKYO MX, BS11, and other channels, will be performed by Keina Suda, and the ending theme will be performed by the voice actor unit Daiki Yamashita × Tasuku Hatanaka.

"Muchuu sa, Kimi ni." is based on the manga of the same name by Yama Wayama, which was animated in the same season as "Karaoke Iko!". The story unfolds in an omnibus format, centered on Miyoshi Hayashi, a mysterious second-year high school student at a combined middle and high school for boys, and his classmate Akira Nikaido, who, as a backlash to being too popular in middle school, made a "reverse high school debut."

The opening theme is "Rubble," a new song written specifically for the anime by Suda, who is said to be an avid reader of the original manga. It is a sad yet heartwarming number that prays for a reunion with a cherished person, and it will be digitally released on August 20.

Meanwhile, the ending theme is "Bitansan Adolescence," sung by Yamashita and Hatanaka. This song was also written specifically for the anime and is an upbeat pop song with the message of enjoying the precious, fleeting moments of life to the fullest. The track is included on their first EP, "Share," which will be released on September 3, and will have an advance digital release on August 22. It was also announced that Yamashita and Hatanaka will appear as voice actors in the anime as classmates of the main character, Akira Nikaido.
Keina Suda Comment

This is Keina Suda.
I was given the opportunity to write the song "Rubble" as the opening theme for the TV anime "Muchuu sa, Kimi ni."
I've been reading the comic since it was first released, so I feel this is a happy coincidence.
I believe that the people who come to mind in the midst of our ordinary days are the ones who shape our hearts.
They are surely cherished beings.
I'm looking forward to seeing how the unique atmosphere of the original work will be expressed in the anime.
Daiki Yamashita Comment

Daiki Yamashita × Tasuku Hatanaka will be singing the theme song! The title is "Bitansan Adolescence"! It's a sweet and fizzy song that's perfect for the anime, so I hope you'll enjoy listening to it! Please look forward to it!!
Tasuku Hatanaka Comment
I never thought I'd get to sing the ending theme with Yamashita-san!! I was so happy!!! I think we've created a fun, pop song that makes you excited about their dynamic!! It was a lot of fun to sing, so I hope that comes through and adds color for everyone who listens!! Thank you!!
"Muchuu sa, Kimi ni." on TOKYO MX, BS11, etc.
TOKYO MX
the debut episode: August 21, 2025, at 10:30 p.m.
BS11
the debut episode: August 21, 2025, at 11:30 p.m.
Source: Music Natalie
*This content has been translated from Japanese into English using machine translation. We apologize for any mistakes in the current version, and will update accordingly.