I'm kind of inspired by @babiesbat 's posts about CCCC and @safaristylez (I believe, but my memory isnt the best) talking about their headcanons. So I'm gonna yap about my interpretation of the album and the like, repeating loop theme
I've always kind of thought of Concord as some kind of forced perfection that Soul pressures himself and Heart and Mind into. I think the storyline of Chonny's Charming Chaos Compendium is like a self fulfilling prophecy
Think about it, the album is implied to be in some kind of loop, ending with Taken for a Ride then looping back to the start with Time Machine Reprise and they split again
Concord just isn't possible to hold forever. That's because it isn't realistic. Soul threatens to kill all three of them if they refuse to become Whole, and that's the climax of the album, the point that Heart and Mind decided to both work together because their fear for that outcome is greater than their hatred for eachother
It's an unnatural outcome from stressful circumstances. And once that stress dies down and so does the temporary high of everything seeming okay finally, the resentment comes back because it wasn't ever actually resolved, just distracted from
The only real way for these three to be happy would be to actually accept themselves, their differences, and become comfortable with disagreeing upon things without it spiraling into being at eachother's throats. Because their current idea of concord is just an act,, and despite them "becoming Whole", Whole is not stable at all and it quickly falls apart again.
But that won't happen. Because they've never known anything else other than this. Heart and Mind will probably always blame eachother every time they split again, spiraling back into the same battle without seeing the truth. And Soul will be too consumed by his depression and stress to think beyond "God, I'm back in this Hell, I need to do whatever I can to get us out of it as soon as possible". At the beginning of the album, he idolizes being Whole with nostalgia and a longing, blind to the truth of their problems.
