Just as of late, I'm doing a research paper about him.

Also, did he commit human rights violations when he was in power?

i suggest you go to Zmag.org and do a search there
or maybe tompaine.com
and come back with info

I dont know about what he did in Peru, but I believe the Japanese government was wrong to grant him citizenship when he clearly gave it up by proclaiming himself to be Peruvian in order to run for president.

The Japanese government is funny in that way. Non-Japanese who have lived in Japan and contributed to the Japanese society for generations won't be granted citizenship while a person (criminal?) with Japanese blood who once gave up his Japanese citizenship gets it instantly.

Yes it is strange in that manner. Dual citizenship is a hot topic for many Japanese abroad as well.

However, Japan's strict immigration laws may soon be relaxed. As a few independant reports by Japanese economics researchers have found that with Japan's current population decline and retiring baby boomers, that it will suffer a massive shortage of skilled workers within 15-20 years. Figures have been estimated from 15-30 million skilled immigrants would be needed ('skilled' ranging from tradework to professional work). And unless those 5-30 million are entirely comprised of Japanophiles, people will not work there unless the government will recognize them as part of their society.

well people who are exiled from their countries have to go somewhere
The US is a haven for international criminals
take the case of Haiti
Americans are harbouring a Hatian general who was responsible for killing thousands of haitians during Duvaliers rule
there was proof of this but the US wont hand over the general.

This is nothing new really...its a mere analog.