I think this manga might legitimately be written as like pro-natalist propaganda. Despite the ridiculous confusion and seeming complexity of what's going on, the core plot is very simple when you strip out everything that doesn't contribute to the ending: The MC, via a bunch of time travel nonsense, learns of the potential future children of her lover if the mc didn't date her and grew so attached to those possible children that she sacrifices her happiness (at least happiness in her youth) and pressures her poor lover into comphet in order to make sure that some more Japanese babies get born.
Seriously, the amount of deus ex machina reasons that get thrown out inexplicably to force the MC into this corner where it's her only option only to pretend like it's her choice in the end really reminds me of conservative propaganda stories like Chick Tracts. Why was she cursed to always die? Why did the comphet option prevent her death this time? Why do they have time travel powers to begin with? How do they suddenly know how to manipulate them? Why did the MC lose her memories after some deaths but not others? Why did the MC who was living happily as an adult lesbian go from "those kids weren't born" to "I should kill myself"? Why were those unborn kids more real to her than her own lover, who she just smiles at and then ruins her life.
None of these things make sense or even serve the story, they just close off real happy endings to trick you into accepting the one predestined ending that fits the author's message.
Those are pretty much my thoughts put into tangible words about this work, very well put. Will say in a nutshell it's complexity for the sake of complexity, and I understand people are capable of bizarre thought patterns and conclusions that only make sense to them. Though, this is the only time I didn't enjoy a yuri work because, what's with the mc's logic? What sort of mind equation did she solve in those 10 chapters?
If only there had been some sort of needed rest for the readers to make it so it makes sense, or atleast more substance to how mc makes up her mind about everything.
This just seems rushed...Might probably just blame the editor for this one, it's just sad since the art really looks nice. Will check out more of this author's works if there is anymore available!