After the completion of "NATURAL," "Hanayorimo Hananogotoku" and "Tenno Hibiki" (Hear in Heaven) were drawn as side stories, and then the "Hanayorimo Hananogotoku" series was officially started.
前作完結後に「外伝」として「花よりも花の如く」「天の響」の2編が描かれた後、正式に連載が始まった。