Late 90s vampire detective anime and the soundtrack nails that exact mood. NightWalker's score lives in this space between noir jazz and supernatural tension that was so specific to that era of anime. "Gessekai" as the opening theme has this moody vocal hook that immediately sets the tone.
Read more
"Breed no Theme" drops into genuinely unsettling territory with these dissonant textures creeping underneath. Then "Shidou no Ikari" flips into full action mode with aggressive percussion and sharp string arrangements. The contrast between "Odayaka na Nichijou" and "Eien no Yami" is basically the whole show in two tracks.
Daytime calm versus eternal darkness. If you're into late 90s dark anime aesthetics, this soundtrack is the distilled version of that whole vibe.