A live-action horror visual novel set in Osaka Castle Park. Explore the park after dark, make choices, and uncover a disturbing supernatural mystery through footage filmed on location in Osaka.
Certain supernatural visual elements and pre-rendered video sequences used generative AI; AI also assisted with visual design and UI.
CodeAssist
Generative AI assisted with code modifications.
WritingAssist
Generative AI assisted with limited narrative design.
TranslationAssist
Generative AI assisted with localization.
Not used, per the developer
In-game AI
Not mentioned
Music & SFXVoiceMarketing
Read the full disclosureQuoted from the Steam store page
Generative AI was used during development for certain supernatural visual elements and pre-rendered video sequences, and to assist with some visual design, UI, localization, code modifications, and limited narrative design. All live-action footage of Osaka Castle Park was filmed on location. No AI-generated content is created during gameplay.
CorePartialAssistPlaceholder
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1 now · Daily snapshot of public Steam data
Collecting dataGameDB started tracking this game on Sep 23, 2026. The chart fills in as daily snapshots arrive; the latest reading is 1.
Why it’s here: Announced recently · 1 follower. Upcoming games rank by Steam follower growth over the last day and week, weighed against the audience they already have. Released and upcoming games are charted separately; estimates and stars are never mixed in.
Made by
Developer
OG
Osaka Games
Developer on Steam
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Shares AI uses or genres with The Demon Lurking in Osaka Castle – Episode 1
The Demon Lurking in Osaka Castle – Episode 1
