K.W. Blue Tale

Indigo is a lost Rock troll. He separated from hid tribe as a kid and ended up in Bergen Town, not far from the Troll Tree. outside the cage of the Troll Tree a young pop troll, named Willow, who is the same age as him, saved him from almost eaten by an alligator-like creature. After Willow, and her mom Rosiepuff, save him, he was taken to the king of the Pop tribe (Peppy's father). The know Indigo is a rock troll he wanted to send him away, but Rosiepuff vouched from him and offered to take care of him and raise him. The king allowed it, but on one condition, he had to live like a pop troll, so Indigo had to hid his rock troll self. Willow befriended Indigo and for years they became closer and then they fell in love with each other.