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Lion's Investment Diary
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About Me

I currently live and work in Japan. I’m in my forties, working in IT.

I enjoy traveling and staying active. I also find myself constantly re-examining what “work,” “money,” and “time” really mean—often through observing how people in different countries approach life.

Over the years, I’ve lived in several countries, including China.

Living under different social structures has gradually made me realize: a sense of personal security doesn’t come entirely from effort itself, but more from understanding the systems around you.

In recent years, the yen has continued to depreciate and the cost of living keeps rising. At the same time, aging quietly reshapes one’s circumstances.

Whether we like it or not, an individual’s labor value, physical strength, and energy all diminish over time.

The emergence of AI has made this trend even more apparent.

Skills once considered “professional moats” are being rapidly compressed. Work uncertainty keeps amplifying.

Physical decline, skill depreciation, and rising living costs—layered together, they force us to rethink a very practical question:

How to maintain a dignified basic life, rather than being hijacked by life itself.

This blog was born precisely in this context.

Through sustained thinking, I hope to document my understanding of life, work, and systems.

Through investing, structural insights, and long-term judgment, I aim to build a kind of “protective layer” for life—gradually establishing passive income and time freedom, while minimizing major judgment errors.

Survival should not consume life.

Within real-world constraints, to still retain curiosity about the world, a sense of control over one’s life, and the ability to experience meaning and joy—that is why I write these words.



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