Flower Comics
"Sonnan ja nē yo" was serialized in Shogakukan's "Betsucomi" magazine from the November 2002 issue (released in October) to the June 2006 issue (released in May). Shogakukan collected the individual chapters into nine bound volumes under the Flower Comics imprint. The first volume was released on March 26, 2003, and the last volume was released on June 26, 2006.