There isn't a sprite named Allan in Harvest Moon DS or Harvest Moon DS Cute.
If you mean the third Harvest Sprite Channel in Harvest Moon DS or Harvest Moon DS Cute, all you have to do is rescue 20 Harvest Sprites. After your twentieth Sprite you will automatically unlock your twenty-first Sprite who runs Channel 3.
go to the map
All you have to do is particapate in 3 festivals.
you buy it at the harvest sprite company tree -Santana.D- you buy it at the harvest sprite company tree -Santana.D-
Once you get 60 Harvest Sprites, examine the large pot-like thing in the Sprite Tree.
Go to the site in "Related Links" to see how to get each Harvest Sprite.
You have to find all of the harvest sprites
Buy it with tokens at the sprite casino.
at the harvest sprite casino. in the spring
Hops - Investigate the well near the Blue Bar
They tell you whats happening around the game