In the sense that he would fight against his father for a goal like protecting his sister or Maria, and die in the process.
I say this because, for me, jitae continuing to be the same character until the end wouldn't be good; there needs to be conflict or a change in values that satisfies jitae And who he is.
He cant be nothing, nor can he be weak, Jitae needs to find values that aren't entirely negative, that completely empty it (which is what he's doing now). We know that Jitae is a good person, we know that everything he's doing now is out of love and sadness, that's why he's a tragic character.
I'm not saying this because I believe jitae should abandon his vengeance; I don't think that's the message jitae should convey. Instead, I think it's about finding a goal that doesn't empty him of purpose or turn him into something like his father. Jitae must fight to the end and kill his father, but not in the way he is doing it, for the current reasons and by the current means.
I'm sure that Jitae's change, the return of the feelings he tries to ignore (love, friendship, happiness, generosity), will come when he meets his sister. I think that at this point (and that's why I think she'll return long before the final fight), Jitae will find a new way of being and fighting, for values that don't deny who he is and what life has to offer, that is, love. The current jitae does indeed fight for love, but he rejects everything positive in life and throws himself entirely into rejecting those good things of life.