Ai's death was a properly written tragedy.
This is just trash.
I don't buy it you did it for your sister, fucker.
You just traded one suicidal idealization for the next.
He had been planning this shit since at least chapter 106, probably much earlier.
"Noo I am doing it for my sister" fuck that, you were just looking for a way out.
There is no weight or beauty in this.
Aqua was just a broken guy, his soul tortured twice by the whims of the gods.
All of those chapters, all of them just for this idiot to say "I was born for my sister's sake".
This is beyond autistic. You think you understand what you are giving up, but you do not.
And with this, and only 2 chapters left until the end, this story is irredeemable.
There are 3 outcomes:
1) Ruby kills herself:
The author didn't give Aqua what he wants, it makes sense because this selfish act should not be rewarded narratively. The story still sucks because this ending doesn't fit the theme of hope that had been enstablished in every fucking arc except maybe the prologue (debatable: Ai was able to save her children and find love, she didn't premeditate suicide, it was tragic, yes, but not hopeless).
2) Ruby lives on, we get a "bittersweet" ending:
The author just fucking glazed the suicide of a broken and traumatized person, who has been tortured for 40+ years straight.
It also doesn't make any fucking sense. The scars of this should follow Akane (who failed to save him), Kana (who was abandoned once again), and Ruby (who lost her most important person for the second time) for the rest of their lives.
Naturally, if the author decide to reincarnate them once again in scenario 1 or 2, this manga fully becomes trash and an insult to the readers.
3) The author makes a step back, Aqua is somehow magically alive:
The least horrible scenario, but in that case we just spent several chapters on essentially "bait".
It's extremely unlikely the story can recover, even in this scenario.
In other words: it's fucking over.
I have read many stories, but it has been a long while since I've felt so much disappointment.
Fuck this, honestly.