This is a set of picture books: "Ahiru no Tamago" (Duck Egg) and "Daichan to Umi" (Dai-chan and the Sea), offering enjoyable stories for children. - Title: Ahiru no Tamago (Duck Egg) - Title: Daichan to Umi (Dai-chan and the Sea) - Author: Yaoko Sato - Author: Daihachi Ota - Series: Tobira no Hon 5 - Series: Tobira no Hon 7 Thank you for viewing.