 At the time of World War II, Jeudi and Lundi set on a journey to discover Jeudi's past and in the process learn the depth of the love they have for each other.The manga series was originally serialized in Japan, in 1983, in the weekly publication Ciao Magazine by Shogakukan, with the first volume of the series being released in October 1983.The second, third, and fourth followed in February 1984, July 1984, and November 1984.