There is a letter sent from Tetsuya Yamagami to his acquaintance, who is suspected to be the criminal of killing the former PM Abe.
It was publicized on Japan's major news sites, but was later deleted, due to ambiguous reason.
Here is the full English version.
(Translation begins)
Dear ***(concealed)
Long time no see.
How long has it passed since I posted "I'm not satisfied with it" on your blog.
Since I wrote "I desperately want a gun",
I've spent a lot of time to obtain the one.
It is like the way of believers of Unification Church who sacrifice everything for fake Messiah.
Even though the purpose is opposite, the extent of enthusiasm may be the same.
The relationship between Unification Church(FFWPU) and me dates back to 30 years ago.
Since my mother's registration on FFWPU, my days at the age of 10s passed with overspending more than 100 million Yen (over 720,000USD), corruption of my family, bankruptcy, and so on.
It's not too much to say that the experience distorted my whole life.
For me, the process to form individual character and life consists of the lies of my mother who can't care about children and family,
unstoppable sins with certain intentions,
endless conflicts caused by them,
and foreseeable destruction.
And also, the man(Sun Myung Moon)
who calls himself the living God,
who believes all of the women and money over the world are his possessions,
who takes all the measures to get them.
Such a man, the group who treat him as a God, and the society which allows the existence of him are the shame of mankind.
That's what I wrote on your blog.
Even now, I don't change the mindset.
Though it's regretful to say, former PM Abe is not my original enemy.
He is just a member of the supporters of Unificationists, who can give the strongest impressions on real world.
Even if I would like to kill Moon family, I know it's impossible.
The issue has an aspect of difficulty to make them apart by single attack.
If it's possible,
Hak Ja Han is the first that should die.
If it's impossible, I wanted to kill a family member of Sun Myung Moon at least.
But, the death of the member may make other siblings happy or may promote reunification of FFWPU members.
Anyway, none of them is along with my purpose.
I can no longer afford to think about political meaning or result caused by death of the former PM Abe
(Translation ends)
The only source I found on July 18, 2022
https://www.sponichi.co.jp/society/news/2022/07/18/gazo/20220718s00042000122000p.html
The image saved by twitter user "croftsnemoto".
https://twitter.com/croftsnemoto/status/1548885405965369344/photo/1