The Harvest Sprites are characters that you can meet in Story of Seasons starting on Day 22 of Spring, Year 1.
First Harvest Sprite Scene
To see the first Harvest Sprite cutscene, go to the rental field in Mountain Hill on day 22 of Spring, Year 1 or later. (If it's raining, wait for a day when it is sunny.)
Second Harvest Sprite Scene
To see the second Harvest Sprite cutscene, you have to have seen the first one. Then go to the rental field in Zephyr Hill to see the second scene. (If it's raining, wait for a day when it is sunny.)
Third Harvest Sprite Scene
To see the third Harvest Sprite cutscene, you have to have seen the second one. Then go to the rental field in Riverside Pasture to see the third scene. (If it's raining, wait for a day when it is sunny.)
Fourth Harvest Sprite Scene
To see the fourth Harvest Sprite cutscene, you have to have seen the third one. Then go to the rental field in Harvest Plaza to see the fourth scene. (If it's raining, wait for a day when it is sunny.)