Written by Kamiki and composed by Aika Ōno, the song appears in the soundtrack to the visual novel video game 428: Shibuya Scramble, used as the opening, ending, and insert theme.

Musically, the song opens with a calm strings intro and transitions into rock, and it lyrically emphasizes hope and positivity even in a mostly unchanging world.

428 executive producer and co-writer Jiro Ishii wanted to use whatever song they picked also as the game's ending theme, and explained that "Sekai wa Sore demo Kawari wa Shinai" gave him the best feeling of all alternatives, as it holds a positive message, rather than a strictly emotional one.

[5][6] When Ishii explained this at a promotional event, Kamiki responded saying it is reassuring, as she "always" feels uncertain during the production of her music.

[8] The song's primary marketing campaign was named "428 × Aya Kamiki" Shibuya Jack, a "takeover" of the eponymous city.

[15][6] The song was played as background music in public areas, spanning outside of Shibuya and into Shinjuku, Roppongi, and Akihabara.

[14] A music video for the song was released on November 29, exclusively on the web page for Kamiki and Chunsoft's collaboration.

The video is shot in a style similar to 428: Shibuya Scramble and alternates between Kamiki, who is singing the song in an environment imitating a live performance, and the 428 characters Achi Endo and Shinya Kano (respectively played by Yūto Nakamura [ja] and Kousei Amano) as they roam a nighttime Shibuya.

[7] Later that day, Kamiki also performed the song as a guest on the late-night NHK General TV program Music Japan  [ja].