"dreamland" debuted at number 2 on the oricon singles chart with 112,000 copies sold, behind orange range's "onegai! señorita". it slid down to number 3 the following week where it stayed for three consecutive weeks, bringing its four-week total to just short of the 250,000 mark. the single spent three more weeks within the top ten, before falling off the top twenty a week later. "dreamland" charted for twenty-five weeks on the oricon singles chart, selling a reported total of 349,000 copies during its run. the single ranked at number 18 on the year-end chart and peaked at number 4 on the monthly chart, where it stayed for two straight months.