E6. Taking the Perfect Picture of a Maruishi Dosojin in Yamanashi! / We'll Enjoy Some Curry in Yamanashi

As a story idea for Haruno's manga, the girls participate in a "maruishi (a spherical stone)" hunting event in the prefecture. To find out how round a stone is, participants have to use a specific smartphone application to scan the stones. The girls run around Yamanashi prefecture looking for the roundest stone but....