https://en.wikipedia.org/wiki/Shinzo_Abe#Political_positions...
"Abe is affiliated with the openly ultranationalist organization Nippon Kaigi (Japan Conference). He is considered a right-wing populist and ultra-conservative within the LDP, and some media and books have referred to him as a far-right politician"
There were also numerous scandals during his tenure, most of which were not widely reported outside Japan... but, an example is:
https://en.wikipedia.org/wiki/Moritomo_Gakuen
"In March 2018, it was revealed that the finance ministry (with finance minister Tarō Asō at its head) had falsified documents presented to the parliament in relation to the Moritomo Gakuen scandal, to remove 14 passages implicating Abe."
Political pages on Wikipedia are notorious for left-leaning editorial domination and are not a useful measure in the way you intend.
What source of info would you believe in summarizing Shinzo Abe’s policy? The Economist? Basically any in depth coverage of Abe would go into this (not to judge but to state the current political conditions in Japan) so it’s findable
"Jacobin is a magazine aimed at the American Left based in New York. It offers socialist perspectives on politics, economics and culture. As of 2021, the magazine reported a paid print circulation of 75,000 and over 3 million monthly visitors"
"Jacobin has been variously described as democratic socialist, socialist and Marxist."
I think it's fair to say they are Far-left by definition. Unfortunately that is often used as a slur but I think it is accurate in this case.