There's a direct link from our stomach to our heart.
The English translation of this book is "Lunch No Akko-chan." A collection of four inter-related short stories written by the award-winning Japanese author Asako Yuzuki. These stories took place in the white collar business district in Osako.
The book begins in a small book publishing company, where the senior editor Akko realized that one of her female subordinates, Sawada, was unhappily eating a homemade bento alone. Akko suggested to Sawada that since she missed home cooked food, she wanted to swap lunches with Sawada for a week. If Sawada packs her a traditional Japanese lunch daily, Akko would treat Sawada to her regular lunch spots for 5 days, all paid for. Instruction and direction will be given to her daily for where to go... Thus begins Sawada's adventure in food, as well as life.
The stories had been made into a TV J-drama series with the same name.