[Nazzareno]

Mobile version is even better, with a fantastic background music (any guess on which is the song? Can't shazam it)

[aasasd]

The music is similar in spirit and sound to Space Ponch, who are also Japanese: https://www.youtube.com/watch?v=Z8maoqr4E5k

[mzs]

No tags in the MP3, likely created for the site but I too wish I knew the artist(s):

https://y-n10.com/assets/sound/bgm.mp3

edit: 吉田 健二 Kenji Yoshida selected works: http://dajistudio.com/

https://twitter.com/mount_inc/status/1381805231479005186