Hi! キッチン is a beautiful book, we read it back in 2019 in the WK Intermediate book club (ah the nostalgia 
) and I loved it.
If you decide to read it, please feel free to use the threads of the old book club - you can read them to find answers to questions you might have, and you can even still use them to discuss the book (so everything is in the same place for people who are reading even later than you are). It’s organized by the reading weeks we had back then, with one thread per week. You can find it here:
Enjoy!