The MC basically shrugs off her imminent death for the majority of the story and her loved ones never contend with her illness until it is rendered curable via deus ex machina.

Considering it's the token of her marriage that magically saves her, this seems like another case of the author's addiction to "love cures all" narratives, and it's just as offensive with terminal illness as it is with neurodivergence.

We don't find out until her second lifetime that her cousin died of the same cause because it's presumed in her first life that her cousin died of overwork, and there's no one else in her family who died like this.

In one scene, the MC decides not to take a morning-after pill because she gets the ML to agree to accept responsibility for the child... without telling him what he's taking responsibility for.

In a later scene, the ML says he will kill himself if the MC dies. The MC assures him that she won't die even though she is certain that she will, in fact, die in 2 years. This incredibly frightening confession is never addressed again.

Not long after that scene, the MC decides to actively try for a child with the ML. She does not in any way check his understanding of what child-rearing entails or if he's ready to take responsibility when she's no longer around. Even if he had not just recently expressed suicidal ideation, we're talking about a man who is described in turns as extremely high-functioning, then extremely low-functioning. He can hold down a job, but he can also disappear for over 24 hours without explanation or fail to respond to people calling out to him for hours or even days, and he is shown to be unable to feed himself regularly without assistance. But the MC never shows the slightest concern about whether he is able to feed, clean, and raise a child alone. Nor does she ever have a serious talk with her own parents or in-laws about whether they can raise the child for her.

I remember the FL taught her husband to used the cab to go to work when they live outside and just how much trouble she had to face because even a simple thing as that is a difficult things for her husband to do.

the most awkward thing is when they actually enter physical intimacy because the FL had to lead the ML but the ML really like to do it so he always want more

the eventual ending is when the FL appreciate her being alive even after her original death