Walking the Length of Japan

My goal is to walk the entire length of Japan. From the far north point of Wakkanai to the far south point of Makurazaki.

I've never done anything like this so it would mean the world to me if you could help me raise funds to achieve this goal. My mental health isn't very good at the moment, and I heard that walking is good for your mental health so I though, hey, why not combine that with my favourite country and walk Japan?