I've had this ask for months and I don't have the heart to tell this person it's not gonna happen. You're too optimistic buddy I'm so sorry

Im not sure if this means work out the issues they had from the war, or their idiosyncratic issues separate from their past together? Because if it's the former, i think we're past that and they have more or less moved on as of Altered. The things that have happened will never and should never be forgotten by any of the characters, but they are able to go on into yet another era with the hatchet buried. Even natsume who held onto the grudge the longest, well, i'm very curious about the switch climax, but i think even he, after the showdown in Altered, has been appeased. Not to say he'll start being buddy buddy bffs with eichi in any way, but the wounds and regrets of the past are being healed with the times changing. It's never going to be perfect, but such is life, and we move on.