More numbered tracks and more creeping dread. Hayarigami's drama CD from 2004 is a PS2-era companion piece to the urban legend horror series, running nine tracks with no named titles. Just Track 1 through Track 9. The anonymity works because the whole thing plays like an audio horror experience where you never know what shift is coming.
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Nine tracks gives it room to build tension and release it. The PS2-era sound design sits in that slightly muffled, intimate space that makes everything feel closer than comfortable. These drama CDs were a whole thing in mid-2000s Japan and hit different than just a soundtrack.
If you want Hayarigami lore delivered straight into your ears like a ghost story, this is the format.