Moody synths and traditional Japanese instrumentation hitting you right in the chest. Kagura Gensoutan is a Windows dungeon crawler from 2010 that sounds way more atmospheric than it has any right to be. "封印された森" (Sealed Forest) has this creeping tension that builds without ever letting go, and "この世ならぬ紅葉道" paints an otherworldly autumn path you can practically see through the music alone.
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Then "望郷歌~まほろば~" opens and closes the whole thing like a longing letter home. The arrange version at the end ties it together with just enough warmth. There's a real sense of place here, shifting between school life calm and yokai-filled danger.
If you dig Japanese folklore wrapped in PC-era atmosphere, this one rewards the full listen.