My brother GAKU-MC’s book “Jinseini Camping car wo” (Bring a camping car into your life) was on sale.

Daisuke YOSUMI deliberately practiced rather extreme separation between on and off work before making a camping trailer in New Zealand’s lakeside and seaside as his base.

We talk about it in the book’s section “I chose life, not materials”.
https://amzn.to/3gd8zFx