english

The 80% Rule: A Financial Defense Design

Why living on 80% of your household income creates financial stability. Learn how emergency funds and structural design protect against income loss, caregiving leave, and unexpected illness.

2026.03.03

１　前提　構造　世界　Assumptions / Structure / World

To My 15-Year-Old Son

After surviving a 2.3% survival rate in ICU, I reflect on faith, death, and what it means to live without believing in God. A letter to my 15-year-old son about religious literacy, mortality, and choosing your own premise.

2026.02.28

宗教

The Price of Freedom

22 Years Old: -$100k vs +$100kMeta DescriptionTwo 22-year-olds. Same electrical career. Same salary. One starts with -$1...

2026.02.22

② 人生設計の前提　Life Design Assumptions

The Price of Freedom: What It Really Costs to Live Independently as a Teen in Australia

My teenage son said,“I don’t want to live on a boat.”His father replied,“Then rent on land.”That was the end of the conv...

2026.02.22

② 人生設計の前提　Life Design Assumptions

Politics Without Talking About Politics

Politics is not about parties or personalities. It is about assumptions, human nature, emotion, and system design. A structural breakdown of how societies are built.

2026.02.22

⑧ 社会・制度の前提　Society & System Assumptions

The Chain of Fixed Costs | Money Premise

A simple guide for teenagers about fixed costs, emergency funds, and why weekly payments can become financial chains. Learn how to protect your future freedom by understanding money in the right order.

2026.02.22

③ お金の前提　Money Assumptions

Future of Work | Special Edition

A letter to my 15-year-old about the future of work. Employment or independence is not the real question. The real power lies in designing your career using education, skills, and visibility.

2026.02.21

② 人生設計の前提　Life Design Assumptions

Investing for the Next Generation｜Episode 16

Investing isn’t about chasing quick returns. It’s about building a structure that doesn’t break. A clear and simple guide for 15-year-olds on money, emergency funds, trust, and long-term thinking.

2026.02.21

③ お金の前提　Money Assumptions

To My 15-Year-Old

Listen carefully.Society isn’t kind.But it isn’t cruel either.It simply runs on structure.And most young people are thro...

2026.02.19

③ お金の前提　Money Assumptions

To My 15-Year-Old Son

Success Is Not an AddressBy the time you read this,our life may look different.Maybe we won’t be on the boat.Maybe our w...

2026.02.17

① 思考の前提　Assumptions of Thinking