Imam Mahdi (mgehr) `s justice is a moral type, not jurisprudential

His justice is filled with affection,

and (mgehr) spreads it in a fatherly kindness manner to profundity of people`s souls and homes.
It is like how cold and heat penetrates into homes.

[About the issue] Khātam al-Anbiyā۱, The Messenger of Allah [Prophet Muḥammad (pbuh)] stated:

The living will wish the dead were alive and enjoy his [the Imam (mgehr)] justice.”

In that era the society turns justice;

not through force.

Everybody achieves his/her right, and everything is put in its right place.
Just as God stated in Holy Qur`an,

‘Know ye (all) that Allah giveth life to the earth after its death! (Holy Qur`an, Surah AL-HADID, verse 17)’

Looking forward to the emergence of Imam Zaman (mgehr) means, looking forward to:

[Living] in the world which is filled with justice,

[having] justice for all humans,  suppression of cruelty from life of human,

and coming of the better (higher) spiritual and material world.

Reference:

۱-Khātam al-Anbiyā is the Prophet (pbuh&h)’s title, which means, the one who sealed prophet hood by his coming

۱- Imāmate, The Occultation, Emergence : Abs.

۲-The same

۳-Mahdi poor, A., “Exploring some unreliable Hadiths about the justice by the world- illuminator [Imam Mahdī]”

۴-The worldly Utopia

۵- The world just conqueror

۶-“Ithbat al-hudāt”, Vol.3, P.393

The supreme leader of Iran, (1995, Dec. 29). Kayhān