Essentially, he got the deathnote, scrubbed his identity from it entirely in time, memory, and association, sold it to the United States for 10 trillion dollars, and had that money distributed to a vast amount of people in Japan. Definitely still self-interested, and could've been used to greater effect in helping people, but pretty dang good.
They did a one-shot where someone pulled a massive distribution of wealth to a population of people, though still within the bounds of self-interest.
(Edited to the correct link)
https://www.novelcool.com/chapter/Chapter-/4274990/
spoiler
Essentially, he got the deathnote, scrubbed his identity from it entirely in time, memory, and association, sold it to the United States for 10 trillion dollars, and had that money distributed to a vast amount of people in Japan. Definitely still self-interested, and could've been used to greater effect in helping people, but pretty dang good.
And then he
spoiler
gets killed by a shinigami for cheating the system
I don't think that's the link you meant to share
huh i am genuinely baffled as to why that was even in my clipboard anyways fixed.