Humankind Comics
Yokohama Kaidashi Kikou is a Japanese manga by Hitoshi Ashinano. The title is usually translated as "Record of a Yokohama Shopping Trip" or "A Yokohama Shopping Log"; it's often shortened to YKK by fans outside of Japan. The series ran in the monthly manga anthology, Afternoon (published by Kodansha) from 1994 to 2006.
Although it has yet to be officially translated and published in an English language version, Yokohama Kaidashi Kikou is often praised as a masterpiece of both art and storytelling. It's usually classified as science fiction or as a seinen series (aimed at older male audiences), but it also falls into the iyashikei (roughly translated as "healing") category; iyashikei is a label for slice-of-life stories with a cathartic or soothing quality.
Background of Yokohama Kaidashi Kikou Manga