the different Chu Yangs' and other characters' backstories were introduced. I was already really bored reading about Chu Yang the Devourer's past so when the author then introduced the stories of Chu Yi, the Prophet and Lin Qiao and Chu Yu, I really contemplated dropping this story altogether.

It didn't help that there were two twin Gods, the God of Order and the God of Chaos respectively, who had really similar names and were behind it all. They were fighting against each other and used the MC, ML and ML's dad as pawns. One of these two Gods (I couldn't tell which one) ended up confronting the MC and ML in the end.

I felt that this was in part due to all their parallel selves. There were so many of them and all of them had backstories so it all just ended up blurring together.

Chu Yang's grandfather's lover was Lin Qi's dad. I also easily guessed that the Prophet was Lin Qi from an altetnate reality.

Confession, I low-key liked the romance between Lin Qiao (Lin Qi's father) and Chu Yu (Chu Yang's grandfather).

as in the main characters are responsible for mass slaughter and destroying reality as we know it / remaking reality as we know it etc.

Some stories can handle this pretty well, but the issue with this one is that prior to all those heavy hitting "destiny" notes, every single case that the main characters encountered left them barely alive... it just felt like too much drama everywhere with enemies progressively getting stronger nonstop.

Plus the entire concept this novel is built around inevitability. Every struggle / pain / suffering was inevitable and planned out by some higher power and the characters never break out of it.

So you're just left with a weird sense that nobody, not even the gods had any agency (as even the primordial elder gods got destroyed by plan)

the constant death, destruction, and lack of anything good in reality, the final battles become quite numbing and lose their impact to the reader.

It's contrast that typically creates impact, and the characters get progressively more and more cynical, while the worlds get progressively more and more destroyed, there's no real breather, which means once the readers' emotions are exhausted, the final sacrifices have very little impact.

"tragedy" and "politic" are quite appropriate although they're not the main topic and not particularly the mainstream tragedy with dogblood plot and angst, nor the usual politics among humans.

--- Very spoilerly ---
Turns out everything is the design of those Gods. The beginning and the end are already predetermined. All those that happens; the deaths, the lives, the deceits, even the romance all were already set in stone since the first reality. Why? Because if there's a bit deviation, with their all-knowing, all powerful and invincible selves, every deviation will be straighten up.
This is very subjective, but I feel like there's no reason for me to read their story because everything is futile, everything already set in stone. What they did, the place they stand on, their emotion, etc. Especially their emotions. It seems like I read the story of AIs with their supposed 'emotions' already programmed. The characters are like puppets, even for some of the divine beings.

--- Very spoilerly ---
There are multiple realities, so there're multiple MCs and MLs, in total 4 couples each has their own's stories (in quite details).
Rather than going into too details, I think there're some things that could be explain more clearly, for example the abominable Antonio. Once he's on the side of Chaos, then Order, then actually he's a spy for Chaos in Order (?). Then, one or more sentence about each God would be helpful, especially for first time Cthulhu reader.