Zukan / Kohaku [Standard Edition B][CD]

Exclusive Special Benefit for Purchase at SEKAI NO OWARI official store : Acrylic Keychain


*Bonuses are on a first-come, first-served basis and will end as soon as supplies run out.
*One bonus will be given for each CD purchased.

Customers will receive an exclusive "Original 3-Sticker Set" featuring previously unreleased artist photos, available only through this campaign.

*One "Original 3-Sticker Set" will be provided per order.
*The gift will be available on a first-come, first-served basis regardless of the product purchased.
*The campaign will end once all gifts have been distributed.
*Some products released in the future may not be eligible for this campaign. Any excluded products will be noted on their respective product pages.

[Standard Edition B]
CD only

This single marks the first release celebrating the 15th anniversary of SEKAI NO OWARI's major-label debut.
This deluxe double A-side single features "Kohaku," the theme song for the film "The Boy and the Dog", and "Zukan", the theme song for the theatrical anime film "Alice in Wonderland -Dive in Wonderland-".

“Kohaku“ is the theme song for the film “The Boy and the Dog,“ which premiered in March of 2025. The creation of the song was sparked by a particular melody that came to Fukase’s mind when the offer for the film came in. That melody was originally shown to him years ago by his friend Ryutaro Chiba, bassist of Shinsekai Lithium and a close friend since before the formation of SEKAI NO OWARI. Ryutaro later passed away in an accident, leaving the song unfinished. Fukase added a new melody to the piece left behind by his late friend, wrote the lyrics, and completed it as “Kohaku.“
 
“This song is a co-creation with my friend. I first heard the demo nearly 10 years ago, and since then, no one else has had the recording—it only existed in my mind. The song was never finished, so I added a new melody to it and gave it the name ’Kohaku’.“ — Fukase
 
“Zukan“ is the theme song for the upcoming animated feature “Dive in Wonderland“ premiering on August 29th, 2025. Composed by Nakajin and lyrics written by Saori, the song combines fantastical lyrics with a nostalgic melody, inviting listeners into its storybook-like world.
 
“The protagonist of “Dive in Wonderland“ is a girl going through a life that doesn’t quite go the way she wants. I asked myself what kind of words would fit a fantastical depiction of her facing challenges. As I thought, images of creatures that ’struggle just to live because they don’t fit their environment’ came to mind, so I titled the song ’Zukan’ (Field Guide) and wrote the lyrics from that perspective. I hope the song can make those difficult days—when you wonder why you can’t do things right—a little more endearing.“ — Saori
 
These two songs, each fully showcasing the captivating talents of SEKAI NO OWARI’s members as songwriters, are to be released in five different editions.
 
Each edition also features a different jacket design with unique artwork.

1. Zukan
2. Kohaku
3. Zukan (Instrumental)
4. Kohaku (Instrumental)

“Zukan“
Lyrics: Saori
Music: Nakajin
Arrangement: SEKAI NO OWARI

“Kohaku“
Lyrics: Fukase
Music: Fukase, Ryutaro Chiba
Arrangement: SEKAI NO OWARI