Kizaru's unclear justice is so simple. He tries to do his job without any moral or emotional attachment, unlike the other Admirals who operates on their morals. Egghead was very personal for Kizaru, but he still tried to do his job because to him, emotions shouldn't be a factor when you're given orders. Fuji and Kuzan would've helped Vegapunk escape outright. Akainu and GB would be emotionally invested in making sure Vegapunk dies. Kizaru wanted Vegapunk to live, but his duty meant he had to kill him.
Feeding Luffy gave Kizaru a chance to save Vegapunk and the others without outright disobeying his orders. Kuma showed up instead, and made saving everyone impossible hence Kizaru's "it's over isn't it."
Kizaru now had no choice to kill his friends again, and even tried mercy killing Bonney and Kuma so that it wouldn't be painful. He even closed his eyes one time.
Feeding Luffy gave Kizaru a chance to save Vegapunk and the others without outright disobeying his orders. Kuma showed up instead, and made saving everyone impossible hence Kizaru's "it's over isn't it."
Kizaru now had no choice to kill his friends again, and even tried mercy killing Bonney and Kuma so that it wouldn't be painful. He even closed his eyes one time.
If the argument is that the incoherence is what makes him a good character, again, I am not buying it.
The scene with Akainu is the killer. We cannot have both this
And then also have the same character having tried not to do his job and avoid his orders by aiding the enemy in the hope that it allows his friends to escape. It just doesn’t work. Oda cannot sell to me that Kizaru can have that reaction if he did not do everything in his power to fulfil his orders, despite the personal cost to himself.
Kizaru’s flip-flopping so hard that it genuinely does make it seem like WSG gave him brain damage.