The Lost Prince of Another World

The Patron of the Forests, or Floranus, is the head of the kingdom of Aquaterra, home to forest dwellers and ocean creatures. In the past, when he was merely the head of the Forest Kingdom, he formed an alliance with the Sea Kingdom, ruled by Princess Tethys, against the Shadow Country, which had waged war. They won, demonstrating the need for peace in the world. He then fell in love with the beautiful Tethys, and she with him. They married and created one great state, Aquaterra. They were saints and ideals for everyone.
Some time later, they had a child. A wondrous baby, who would share their traits and magic. Days, weeks, months passed. The baby grew. And then, when he was one year old, a great tragedy occurred. The baby was kidnapped. By whom, where, and how—no one knew. The family was devastated. They searched everywhere, all over the world. Sadly, they never found him. Five months after his disappearance, Tethys fell ill. She could not bear the loss of her child and died. Saddened by his loneliness, Floranus almost left his post, but came to his senses in time. To this day, he rules and searches for his only child.
He appears to be a tall man with long chestnut-colored hair that resembles a flame when he's enraged or fighting. He has skin-colored horns with green tips. He wears majestic robes in shades of green or blue. His eyes are green. His tail is thin, and the tip resembles fire, only it's green. Since he's the leader, he has very strong powers related to the earth and plants.

Tethys is the former princess of her ocean world and Floranus' wife. She died after her child disappeared. Her father and brothers rule over her place in the ocean.
She looked like a woman with a beautiful figure, not-too-long blonde hair, the tips of which resembled shimmering water. Her eyes were bright blue. She wore chic outfits made of lightweight fabrics, allowing her to swim gracefully and effortlessly. The tips of her ears resembled fins. Her fingers were webbed. She had a beautiful voice, with which she sang songs about travelers, about peace, and so on. She had powerful magic associated with water, and could wish for waves of any size, even a whirlpool.