Born 1970 in Kanagawa Prefecture, Harada won the 34th NHK Creative Radio Drama Grand Prix in 2005 for Little Princess No. 2. In 2007, she won the 31st Subaru Literary Award for The Teatime That Doesn't Start. Her novel How to Use 3000 Yen won the Miyazaki Book Award. Her other books include The Hotel For Elders, The Purse Dances, The Secondhand Bookstore Diner, Kiriko's Crime Diary, The Lunch Sake series, The Three Sisters Bistro series, First Eat This, Recipes For Delicious Mouthfuls, Zatsu the Set-meal Restaurant, Monthly Income and many more.