@matigo Interesting and heartfelt article. While your friend seems to think that "hooking you up" with a girlfriend will solve your problems, building self-esteem and a sense of contribution is not as easy as that.
You have been through an awful lot in recent years, and being without a steady income or the ability to capitalize on freelance income must be a discouraging fact to face. I might agree that having a supportive human partner who appreciates you for the unique and positive qualities you possess might make it easier to power on through each and every day, but as @hazardwarning mentioned, relationships bring with them various other problems. Only you would know whether someone is suitable to be a loving and reliable partner for you. The good thing is that you've had time to reflect on your previous relationship and all that it entailed, and now you must have a better idea of what your needs and requirements are, should someone interesting come along. Perhaps finding a partner that you can share in the joys and tribulations of life with could be something that you could keep on the table as an option, but of course let it be on your own terms.
The Japanese language barrier seems to be giving you difficulties in your job hunt from what I read in your article, although the disjoint between what you want to see in an employer (corporate ethics) and what they have to offer is also clear. Getting only one reply out of one hundred inquiries seems like a very disheartening and humiliating process. Is there any way you can even up the odds a bit and more readily find employers that match your requirements? On the outset, it seems that a recruitment agency might help in this, as they are supposed to be experts in matching job seekers up with the appropriate employers. I know from experience, though, that recruiters in Japan can be less than enthusiastic when it comes to finding specialized positions for people with special talents and needs.
Actually, I still have contact with my previous employer, and I know they have hired foreign nationals for software development and related tasks in the past. If you'd like me to make an introduction and see what options they might have and whether they would be a good fit for you, feel free to ping me and let me know.