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    About YenQuest

    Financial Advice for Adventurers in Japan

    Moving to Japan is an adventure. Earning gold here, spending it wisely, growing it over time and making sure you leave with your treasure intact — that part doesn't come with a tutorial. Most of the guides were written for someone else, in a language you don't understand, about a system that wasn't built with you in mind.

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    The guide

    I hold a Ph.D. in physics and a 2級ファイナンシャル・プランニング技能士 (Financial Planning Skills Test, Grade 2) certification. I live in Japan, and I've spent years learning how money actually works here — not just in theory, but for people like us: foreigners earning in yen, building a life across borders, trying to make the most of every coin.

    YenQuest started as a YouTube channel because good, honest answers were too hard to find. I wanted something accurate and a little fun — a compass for the financial dungeon that nobody hands you at the airport. The fortunetellers on this site are the interactive piece: tools built with the same rigour I'd apply to real physics simulations, so you can run your own numbers and see the real shape of your quest.

    The quest

    🗺️
    Your map
    Tools and guides that make the Japanese financial system legible — for you, not a hypothetical local.
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    Real numbers
    Run your own scenarios. Monte Carlo simulations, inflation adjustment, uncertainty shown honestly.
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    Protect your gold
    Growing wealth is only half the game. Taxes, inflation and fees are the monsters that eat it quietly.
    🎯
    No false prophecies
    These are models, not crystal balls. The range of outcomes matters as much as the expected one.

    The channel

    The YouTube channel is where the story unfolds — longer explanations, worked examples and the kind of context that a fortuneteller alone can't give you.

    Watch on YouTube →
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    Fine print

    Everything on YenQuest — videos, articles and calculators (fortunetellers) — is for informational and educational purposes only. It is not financial, tax or legal advice. Rules change, circumstances vary, and every model is a simplification of reality. Always verify with official sources and consult a qualified professional before making financial decisions. A physics Ph.D. explains why the models are built the way they are; a 2級FP licence means I can explain the financial system accurately. Neither makes me your advisor.