Honestly it's a pretty poor quality fanfictions, like 3/5 . I was expecting a FF that will have the MC and kushina learn to love each other and fall in love and see how there relationship blooms.
But, it's a wish fulfilment and what you get is a decent third-rate fic that honestly feels like the author has no experience: the environment is not described, immersive is easily broken, the pov changes happen too fast and the author seems to focus on the system a lot rather than the characters. It feels like I'm reading script with extra details, like after this event this happens, instead of an outsider watching a story.
I feel like Ch 1 - 20 was a good start and then 20 - 40, with how you introduced each love interest, started to feel very cheap. There was no tension and each relationship feels shallow. Plus starting to feel like a translation (I know it's not a translation) and phases feel unnaturally to read.
For the author, I feel like you are trying to do too much for each chapter, and you don't give time for the plot points to breath. Either slow it down and try and make the dialogue more natural or extend the chapters to 3000 words, 1000 is way too low for what you are trying to do.
Great idea btw, keep on trying 👍🏾