Live in the moment or start over?
When something bad happens to people, they always think that they can change everything if they start over. This is actually all nonsense.
You know, even if you can start over, what can be changed is only a very limited part of the individual, and the people and things around you will not change according to your thoughts. The important thing is never to regret the past, but to change the present.
But after all, if you can really change the past, it will not necessarily be of no benefit to the present. So, if you don't want to leave regrets, please try your best to fully grasp the present of that past period.
One-sentence plot: Nobuyuki (the heroine), a middle-aged unemployed and lovelorn woman, goes back to the past many times by chance and causes a butterfly effect by changing the past, thus changing the current situation.
Intention: Live in the present and cherish the present.