The Most Perfect Persimmon

"When Joo Hong harvests a beautiful persimmon from her mom's garden, she can't wait to give it to her Grandma, who is visiting from far away. However, the days leading up to her arrival feel like forever--and the persimmon is looking less and less perfect as time passes by. What can Joo Hong do to make sure it's perfectly ripe--and not mushy and wrinkly--for Grandma's visit?"--