Justice
Righteousness
noun
The correct righteousness is always your righteousness. It is your form of justice.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
トーフグチームは正義の味方です！
Team Tofugu takes the side of justice!
戦争に正義はないと思います。
I believe there is no righteousness in war.
正義と悪についてずっと考えてきたけど、まだ正解が見えないんだ。
I have been thinking about justice and evil for a long time, but I haven't found the right answer.