In a kingdom far far away, as the warm sunlights shined down onto the earth, chasing away the coldness of the night, that person slowly opened his eyes. The people knew him under the name, Yusaku, the prince of the Sunset kingdom.

He had a dream about the past. In it, he was sitting next to the merman friend he made during his visit to the summer castle for the first time on the white sand beach, watching the beautiful sunset together. When it was nearly time to say goodbye, the merman started to sing. It was the most beautiful thing he had ever heard. It was at that moment, something inside him changed. The dream ended with a bright smile from the young merman as he waved his hand saying goodbye from the sea.

"See you tomorrow!"

...

Finished changing his clothes, Yusaku headed straight to the training ground. The maid brought his meal but he didn't feel like eating. As he got near to the throne room, he overheard the conversation between his father and one of his fateful subjects.

It seemed there had been a lot of shipwrecks at sea lately. The weirdest part was more than half of the ships which were sunk belonged to fishermen who had been fishing half of their lives. There was no way they don't know about the reef. In addition, a pack of sharks always lurked around there. The moment the crews dropped into the water, they would personally hunt them down, one by one.

When the man brought this up, both Yusaku and his father found it strange since that place was clearly not where sharks should be. But that wasn't all. Unlike the other shipwrecks where there was no survival, this lastest one had two, a thirty five year old salior and his son who was only five years old.

According to him, the captain was telling jokes like he always does while giving his son piggy ride when he heard singing coming from a far. Seconds later, the ship changed course. It was so sudden that he lost his balance and fell. When he noticed where they were going, he immediately yelled out, but no one did a thing. He tried running to the wheel yet, the others stopped him.

What happened next was in anyone's guess. The ship got badly damage, the water rushed in through the cracks and started to sink. Again, no one did a thing like they were willing to accept this fate. Only once they were all under the water did the crews started to response. It was at that same time the singing stopped.

While they were being taken out one by one, the man looked around for his son. When he spotted the boy, he quickly swam there, grabbing the little one and brought him to the small boat which was tied at starboard. The little boy safely boarded it. However, when it was his turn, he noticed the terrify expression his son was making as he shouted out.

"Father! Look out!"

Turning back, what awaited the man was the jaw of a shark, full of sharp teeth. He thought this was the end. However, the singing once again echoed in the air. When it heard that, the shark stopped immediately. Moving back, it closed its mouth and left with the others.

When he heard the man described the singing, Yusaku couldn't take it anymore and ran in the room. Everyone was surprised but they were more surprised before his question toward the man.

"Do you happen to see anyone else out there? Someone who doesn't belong to the crew."

"I don't think so-- Wait a minute, my son asked me something when I was still looking at the sharks."

"What did he say?"

"Father, who is that white hair brother over there?"

"White hair brother..."

At that very moment, that person's face flashed through his mind.

"Ryoken?!"

"I look toward the direction he was pointing but saw no one. Is there something wrong, your highness?"

"Tell me, the place where your ship sunk does it happened to be in a straight line with the summer castle?"

"Yes."

When he heard that, he bit his lower lip while clenching his fists.

"Yusaku, what are you--"

"Father, I want to go to the summer castle."

"I need to confirm it myself."

"That is out of the question! It is too dangerous!"

"Please, father! It is really important!" He got down on his knees, bowing. "Please let me go! I beg you!"

Ever since he was small, Yusaku never once asked for anything, so his action really shocked the king. He thought for a bit before letting a sigh.

"You may go but only if you take the guards with you."

"Thank you, father!"

"Finally, I can see you again, Ryoken."