1. "The Worry-Free Grocery Store" is a novel written by the Japanese writer Keigo Higashino. It was serialized in "Novel Wild Age" in 2011 and was published as a single volume by Kadokawa Shoten in March 2012.

2. The book tells the story of a grocery store on a quiet street. As long as you write down your worries and put them into the mail slot of the rolling shutter door at the front door of the store, you will get an answer in the milk box behind the store the next day: Because her boyfriend is terminally ill, the young girl Tsukito is wandering between love and dreams; Katsuro Matsuoka leaves home for his music dream, but is unable to move forward in reality; the young Kosuke is facing a huge change in his family and is struggling with the confusion of family ties and the future? Will they? A story about confusion written into a letter and dropped into a grocery store, and wonderful things happened one after another.

3. The book won the 7th Central Public Literature Award, ranked second in the Apple Daily Translated Novels Sales Ranking for two consecutive quarters, and ranked among the major brands of Kinokuniya, Eslite, Bloglai, and Kinshido Ranked No. 1 on the list and No. 2 on Amazon China’s 2015 best-selling books list.