Chaotic energy from the first note. Hiragumo-chan is a Windows indie title and the opening track title literally translates to something like "Detonator!" which tells you everything about the vibe. Most of the tracks are just labeled Track02 through Track19, so the song names do not give you much.
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But that first named track sets a tone of frantic, playful mayhem. Nineteen tracks for what seems like a small game means the composer was not holding back. The 2012 Windows indie scene in Japan had this raw, unpolished energy where developers just made whatever they wanted.
You can feel that spirit in how the soundtrack is presented, minimal packaging, maximum content. If you like digging into obscure Japanese indie game music where the tracklist is basically a mystery box, start here.