Someday our world key box -Cogito, ergo sum-original sound track
Tatsuya Shi & KASASAGI
Music available for YouTube Shorts
×1
Paradise of promise (feat. Hanayu)
2
wriggling jewels
3
A perfect day for relaxing and playing games.
4
Player Battle 'WKB DIVE Edition'
5
Uncertainty in uncovering the truth
6
Normal field 'WKB DIVE Edition'
7
Cancel area 'WKB DIVE Edition'
8
Where the hearts of empty shells reside
9
Mining Area 'WKB DIVE Edition'
10
Live venue area 'WKB DIVE Edition'
11
crazy game
12
Normal Battle 'WKB DIVE Edition'
14
The one who holds the jewel key
15
A thirsty loser
16
Project:Drifting Intelligence
17
Shizuna-tan's biggest fan, the destructive emperor
18
Paradise ofParadise of promise Piano promise Piano
19
Paradise of promise epic II
20
Self-sacrifice and trust
21
Paradise of Promise Epic
22
In a world I was seeing for the first time, I always cried.
24
Defeat in 'WKB DIVE Edition'
25
Live venue area transformed: 'WKB DIVE Edition'
Track List
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Original soundtrack for the 2026 stage production, NANAMARU KIKAKU vol. 5:
"Itsuka Bokura no WORLD KEY BOX -Cogito, ergo sum-".
iTunes Store • Instrumental TOP ALBUMS • Japan • TOP 7 • 16 Apr 2026Artist Profile
Tatsuya Shi
Born in 1993. Born in Saitama prefecture. guitarist. Joined the band kasasagi, and has been in charge of chorus and composer since then. In addition to the band, he also works on stage plays.
Tatsuya Shiの他のリリース
KASASAGI
Kasasagi, a Neo Nu Metal band active in the Tokyo area. An emotional and multifaceted worldview. * Theme song for Atom Child * Theme song for Falling into Slumber * Theme song for Kowloon Combat City Airsoft Facility * Theme song for Aruaru Japan * Theme song for the stage play Douma to Seimei * Original music provided for Elizabeth Marie and Hanayuzu * Theme song for the stage play Itsuka Bokura no WORLD KEY BOX -Cogito, ergo sum- Many other songs provided. They also provide original music for movies, stage sound effects, commercials, YouTube channels, etc.
KASASAGIの他のリリース
![To you sleeping in a slumber (To you sleeping in a slumber) [original sound track] Front Cover](https://tcj-image-production.s3.ap-northeast-1.amazonaws.com/u48664/r1037190/ite1037190.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJV4VIS2VN3X4CBGA%2F20260518%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20260518T164620Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=b1fcb1ef9d17fc82b8993bd4aac0fa2a9e32bdad3cb53d9ec361100a772b48b5)
Roost Music Records
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