Developer builds purposeless app that randomly mashes Japanese culture with modern industries

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A Japanese developer has created a tongue-in-cheek web app called 'Useless Business Idea Auto-Generator' that randomly pairs Japanese cultural motifs — such as samurai, ukiyo-e, and yokai — with modern industry trends like subscriptions, dating apps, and cryptocurrency. Each combination is accompanied by a meaningless 'feasibility score' and a mock investor comment. The app runs entirely on client-side JavaScript via a single static HTML page hosted on Cloudflare Workers, with no backend or database. Its deliberately retro 1990s–2000s design features marquee text, neon colors, and blinking elements. The project is the second installment in the creator's self-described 'Useless App Development Division' series, which aims to regularly build and release apps with zero practical value.

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