Maruko is disappointed that her precious Sunday is ruined by rain. But the rain only gets heavier and heavier—until, unbelievably, a flood warning is issued for the whole town.
せっかくの日曜日が雨なのでがっかりのまる子。ところが雨はますます激しく降りはじめ、なんと町に洪水警報が発令されてしまった。
