界線之間 (Between Boundaries) by Fukai V Song Details

Fukai V's ' "界線之間 (Between Boundaries)" was released on its scheduled release date, February 4, 2026. With this song being about 5 minutes long, at This song is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. There is only one song in 邊緣的深夜信號 (Edge of Midnight Signals), so we believe that "界線之間 (Between Boundaries)" is a single. Based on our statistics, 界線之間 (Between Boundaries)'s popularity is not that popular right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

BPM and Tempo

The tempo marking of 界線之間 (Between Boundaries) by Fukai V is Moderato (at a moderate speed), since this song has a tempo of 120 BPM. With that information, we can conclude that the song has a fast tempo. This song can go great with walking. The time signature for this track is 4/4.

Music Key

B♭ Major is the music key of this track. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.

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