Scarlet (Dor)

Scarlet is a red Harvest Sprite, one of the Koropokkur in Doraemon: Story of Seasons. They will help you start at 6am~13pm for 2 days and their heart will decrease every time you ask for help. The more heart they have, the more days they willingly to help you, but the less heart they have most likely they do not want to help you at all. Scarlet will help Noby watering crops.

Scarlet will give Noby the Hopter and Ultra Upgrader because she found it somewhere in the ground but do not know how to use it.

Junk Shop
Koropokkur have a shop that sells Doraemon's gadgets they found all around Shizen Town, but they do not know how to use the gadget so you can trade it with Junk you found in Mine. Some of these gadget just for gimmick. Noby can access junk shop from others sprite too.

NOTE:
 * Toys_Block-Dor.jpg Building Block is from barter with Bartering Machine.
 * Lunar Luck is best for farming mineral such as a diamond because it has effect to spawn rare on all floor and tile. Despite it saying perfect for fishing, it does not do much and just wasting time.
 * Cupid's Arrow only affect villager and koropokkur about 100 point. You can spam it at once, roughly Noby needs 10.000 affection point which is equal to 100 arrows (300 junks) to get Red Heart.
 * Bartering Machine can barter any your item to random villager up to 3 times a day. If you lucky, you can get Junk (x3) through this method.

Koropokkur event
Chapter 1 "Koropokkur"
 * Doraemon 3❤︎
 * First trigger General Store event Chapter 5
 * Go to Rolin Forest at 6am~6pm

Chapter 2 "Found Violet!"
 * Go to Mayor Ryam's Bedroom

Chapter 3 "Found Amber!"
 * Go to Knick Knacks General Store behind the cashier

Chapter 4 "Found Sky!"
 * Go to Sandy's Bedroom

Chapter 5 "Found Jade!"
 * Go to Café Delish kitchen

Chapter 6 "Meet Up!"
 * Found all other Harvest Sprite around Shizen Town

Trivia

 * Koro-pok-guru, also written Koro-pok-kuru, korobokkuru, or koropokkur, are a race of small people in folklore of the Ainu people of the northern Japanese islands. (source: Wikipedia)
 * Sadly when they help Noby, there is no moving animation for them. You won't see them walking around your farm, picking the egg, feeding the animal, watering the corps. They standing in their own position and instantly finish your job. (See the 'Harvest Moon: Back to Nature 1999' for reference.)