Justice

Kai and Justice have a lot in common, although their relationships with their respective reapers are rather different.

Kalé is the only one who has read Justice's mind and so is perhaps the one who knows him best. At the very least, Kalé is the person Justice is most comfortable showing his uglier side to, if no one else.
Kalé seems to cut through Justice's bullshit and see the truth in him, unafraid of calling Justice out and holding him accountable for his actions whilst challenging him to be better. Justice has mixed feelings about this, but ultimately feels gratitude towards Kalé.
After learning from his god that Kalé is doomed to a lifespan cut short by advanced ageing, Justice is determined to ensure that he does not succumb to that fate. He believes Kalé is too good and kind to suffer an early death. His current plan involves a powerful artefact made from the body of the god of creation, which can only be used in 5 years' time. Justice hopes it will be soon enough and that nothing will befall the artefact or Kalé before then.

Carmine perhaps has a more rigid set of morals than Justice himself.
She tends to be the one most often running into danger, having been revived once and saved by death ward twice. This worries Justice to no end.
It is thanks to Carmine that Justice is realising that non-sexual physical intimacy can be a form of comfort and that this is something Justice can offer.

A flirtatious woman with a rather intimate way of healing people. She is the origin of the recurring joke that Justice has a stick (or few) up his ass. She is independent which Justice finds admirable, and is unafraid of speaking the brutal honest truth, though this often seems merely to stir shit than for any particular benefit. Justice respects it either way.
After offending a hag in Murkwood, Coira was plane shifted to another realm and the party has been unable to contact her since.