Synopsis
Shiromi Tsugawa City. An unremarkable town known only as an academy city. Despite efforts at urban revitalization, the city faced only repeated failures—until dark clouds began to gather…
The catalyst was a massive earthquake. Sacred treasures enshrined at Hakuja Ninety-Nine Shrine were damaged, causing mysterious artifacts to flow in from parallel worlds. These “Artifacts” grant special abilities to their bearers. Soon, a horrific crime emerged: a serial petrification incident caused by those who abused these superhuman powers.
Shinkai Sho, a responsible and dependable protagonist, learns that Kujo Miyako—a righteous and reliable girl—is working to solve the case and offers his help. Joined by his cheerful younger sister Shinkai Amane, the three begin investigating the bizarre petrification incidents plaguing Shiromi Tsugawa.
Strange occurrences unfold across the city. Hidden feelings emerge. A mysterious organization looms. Now, the fates and wills of Artifact users collide. This is the “9-nine-” series.
Editorial Review
The 9-nine- series has carved a distinctive niche as a consistently ambitious supernatural mystery visual novel, and Sky Color, Sky Song, Sky Sound doubles down on what made its predecessors compelling: intricately layered urban fantasy mystery wrapped around compelling character-driven storytelling. This installment joins the increasingly crowded space of artifact-based supernatural mystery VNs, but its execution—particularly the focus on parallel-world mechanics and systematic ability acquisition through found objects—gives it genuine structural identity within the genre.
What immediately distinguishes this work is the deliberate entanglement of mystery and character development. The petrification incidents aren’t mere plot scaffolding; they’re the vehicle through which the game explores the moral complexity of power and responsibility, themes rarely handled with genuine nuance in this space. The inclusion of a proactive female lead in Kujo Miyako working alongside the protagonist (rather than being solved for) reflects a growing maturity in how adult-oriented VNs handle their ensemble casts. The tag combination of “excellent scenario” paired with “multiple routes” suggests the branching structure genuinely impacts how the central mystery unfolds rather than simply gating different romantic content—a distinction that matters significantly for investment.
The “beautiful artwork” tag is more than marketing here; the production values across the series consistently exceed their price point, and a school setting grounded in a specific (if fictional) city lends geographic coherence that elevates worldbuilding beyond generic academy fare.
This appeals primarily to readers seeking mystery-first VNs with romantic subplots rather than romance-first games with mystery window dressing, and to those fatigued by isolated supernatural narratives and hungry for interconnected mythology.
A rare adult visual novel that treats its mystery and its characters with equal seriousness—essential for supernatural mystery enthusiasts.
Get “9-nine- Sky Color, Sky Song, S” on FANZA
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Related Tags:
Fantasy | visual novel | school setting | Mystery | supernatural
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