Korean Saju
for the world.
Self-translated. Source-cited. Tested in public for five years.
Saju has been around longer than any modern astrology system.
It comes out of a 1,500-year tradition of cosmological reasoning that treats your moment of birth as a coordinate within a lawful structure of Heaven, Earth, and the Five Phases. The Korean lineage refined this further: it married Chinese 命理 (mìnglǐ) classics with regional scholarship, producing texts like 滴天髓, 窮通寶鑑, and 子平眞詮.
Most English content about Saju is either fortune-cookie generic or translation-loss thin. We're building the version that K-culture deserves: rigorous, cited, and unafraid to say we don't know.
Mr. Ban
Solo developer in Korea. 20 years of code. Founder of the ATOZAI platform. Working method: 13 AI agents and one human — the human being a judgment layer, not a production layer.
I'm 49. I built this because I wanted a Saju reading I could actually defend in front of a peer. Most automated readings I tried were either embarrassing or evasive. Both fail the same way: they treat the chart as decoration instead of as a structured argument.
5 years.
All numbers public.
Failures included.
Most AI startups quietly ship metrics dashboards to investors and polish for the rest. We're running a 5-year experiment in the opposite direction: every weekly metric — MAU, retention, churn, cost per reading, accuracy of the RAG retrieval — gets posted in public. If something fails, the failure goes up the same week as the success.
Why publish? Because anyone can claim Saju "works." Few will let strangers grade their work for five years straight.
Self-translated, not scraped
The full text of the three core classics was translated paragraph-by-paragraph against the original Hanja, with terminology normalized across all three books. No AI-laundered web copy.
Every claim cited
Each reading carries inline [N] markers. Every marker links to the exact paragraph in the classics that supports the claim. No paragraph, no claim.
No fake precision
If you don't know your birth time, we say ‘hour pillar withheld’ instead of inventing one. If a chart's structure is genuinely ambiguous, we say so.
Comparison, not recommendation
The 5-Year Simulator never tells you to take Job A. It shows the shape of A and the shape of B. The decision is yours.
Soft launch May 28.