The full musical catalog for Gurenka, and at nearly fifty tracks it reveals just how much emotional ground this visual novel covers. "紅蓮華" (Crimson Lotus) is the anchor theme. "楽しみのパレード" and "無邪気な時" bring bright, innocent energy.
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"歪んだ心" (Twisted Heart) and "混沌" (Chaos) drag you into psychological horror. "百鬼夜行" (Night Parade of Demons) goes full supernatural. The collection ends with "紅蓮華 久遠," a final arrangement that ties the whole story together musically.
"消えない過去掴めない未来" (An Indelible Past, An Unreachable Future) might be the most emotionally loaded track title here. If the mini soundtrack left you wanting more context, this collection fills in every gap and then some.