Three classmates, including Mali, a full-time housewife, Sayo, who is in divorce mediation with her husband, and Satoe, a career woman, gather when their high school classmate Hiromi die lonely in an apartment owned her. The suicide note left by Hiromi was accompanied by the names of three people who were not so close to each other for some reason, and included a request for the remaining apartment, Byakurensou, and the mysterious inhabitants afterwards. It is a story about three women born in 1963 who live in a "difficult reality" in an unchanging relationship and changing circumstances.

Note: The series was serialized in a josei manga magazine, Josei Seven, and was made into a book with major additions and corrections. The compiled volume is released under adult male (seinen) audience imprint Big Comics Special. You can see the series as seinen or josei on various sources.