Been listening to READHEART to look for the connections to the lore. It almost feels like it might be a duet, and there are a few possibilities.
The verses could follow a call and response format:
>Hi, how are you?
Are you calling up my phone?
Baby tell me what is wrong
Don't you ever let me go
>Hi I am good
I am still looking for proof
Am I good enough for you?
Don't you tell me what's my rule
This is clearly a conversation, but who's who? The first is someone answering a call which would be Haato, but why does she not want haachama to not let her go and what proof would haachama need that she's good enough for Haato?
>Hi over there
Thank you for coming along
On this journey of my own
Promise me you'll won't let go
>Yes, this is me
I am falling but I'm strong
'Cause you got me in your arms
Don't you ever let me go
Again, clearly a conversation.
The conclusion that I've reached from this and the rest of the lyrics leads to a new RRat: This whole string of events was planned in lore by haato and haachama as a way of airing out their insecurities and reach new heights as a vtuber. The Arc will end not in elimination or synthesis, but co-existence as they realize that for all their conflict they need eachother.
Tldr: Haachama needs Haato's approval, and Haato needs the freedom of Haachama The finally will not be one of sadness but one of joy, heralding the next phase of Haatochama.
This is my take on it, but what's yours? there's clearly more in REDHEART than we've noticed as it foreshadowed the calling and the conflict, and it seems like something we could dig into during dead hours.