In the late 17th century a King of a Korean dynasty was dying and losing his grasp on his kingdom. It'd been years since he had produced a healthy heir and now the people of his rule were desperate for a new ruler, male or female, and as such women began to offer themselves to him in order to produce the next ruler. His advisers had given him a week to find someone to produce a child with or he would be disposed of. A woman, who only appeared when the moon was out, tempted him outside where she proposed the idea of producing a child. Seeing how she fit the criteria his advisers had set, tall and beautiful, they agreed and soon, a child had been conceived.
Nine months later, on what would've been January 24th, the woman appeared to the deathbed of the King and presented a baby boy. The King ordered, on his last breath, for the child to be taken away and raised by the maids. The woman then disappeared without a trace. Not five hours into the child's life did his father die, leaving him an orphan.
His early life was easy; take classes, have tours of his land and learn to rule the kingdom. The people were ruled by his main adviser on his behalf and soon the young Prince granted him the title of Acting-King until he had come of age. He was quickly taught how to use a sword due to his basic training needs and by the time he was 10, he could hold his own against mediocre swordsmen. Throughout this he kept hearing the dynasty name of Joseon and especially a girl by the name of Kang Hui-Bin, the daughter of a wealthy man. It was announced on his 12th birthday that he, Ri Yong-Jo had been betrothed to Kang Hui-Bin, a member of the Hui-Bin dynasty.
When he was 13 he had his first attack where he was confronted by a hellhound who had threatened the lively hood of his people who lived on the outskirts of the kingdom. Thanks to his training he managed to slay the monster with little issues, only getting scratched a few times when it had managed to claw him. When reporting to his advisers it was agreed that he would be accompanied by two guards 24/7. As such, his next few attacks were a breeze for him as the guards, both of which could see through the mist, killed all monsters. All swords in the Kingdom had been made with celestial bronze, curtsy of the lady the king had mated with. On his 18th birthday it was announced that his coronation would happen as soon as he was married to Hui-Bin. Frantic, the kingdom prepared for her arrival.
News that the upcoming King's betrothed had fled spread across the kingdom like wildfire, every person condemning her actions and a search party had been organised which would be led by Yong-Jo. In the space of a week from the news reaching the kingdom, the unit made up of eight men had set off. The unit underestimated the mission and many had under-packed, suffering severely of malnutrition in the first month, causing their number to dwindle to six by the end of the second month. Aphrodite looked on above and felt sorry for her daughter, who had obviously felt pressured into doing something and as such, she planned to make it so Yong-Jo could never find her. As the unit reached their fourth month of searching she begged Hephaestus to kill the remaining men whilst she enticed the heir away from them. Reluctant but wanting his wife happy, Hephaestus agreed, sending in mechanical birds on the troops whilst Aphrodite seduced the heir away. Unknowingly, Hui-Bin had been near and had heard the screams of the five troops. Hearing the screams, Yong-Jo raced back to find his five remaining soldiers dead, with their horses ripped to shreds. From there, he vowed to to find the girl for certain and force her back to the Kingdom in order to repay for the deaths of so many.
For the next four years he fought away bandits and monsters (thinking they were attacks by enemies) as he travelled north into China and eventually Russia, still searching for Hui-Bin. Although he had only packed enough food for a month, it'd seem that each night he'd go for something that was close to being finished, it would be replenished instantly. Never questioning it, Yong-Jo thanked whoever did it. For a while after Aphrodite's scheme, Pandia had been thinking of ways to preserve her son and keep him away from finding his betrothed and soon she acquired the help of Hypnos who had promised her one thing in exchange for something else. Pandia had offered the deal to put her son into a slumber that would be sealed away in Hypnos' realms for two hundred years before turning into Hypnos' servant for the remainder of the years he had to serve. Both gods agreed on the deal and waited for the right time to initiate it. After exactly four years of searching for the girl he had now dubbed 'The Lost Princess', Yong-Jo had decided that he would never find her, and instead of returning to the kingdom in vain, he attempted to take his life. Capitalising on the opportunity, Hypnos put Yong-Jo into the slumber and essentially turned his entire being into a single thought bubble that was put into his head.
For the next couple of hundred of years, until 1990, Yong-Jo remained as a thought bubble until Hypnos decided he needed him and essentially made the Prince be reborn. The Prince, confused of his new surroundings, was quickly informed by Hypnos of his new role and that he should adopt a more appropriate name. Thinking it was happening too fast, Yong-Jo said something that sounded along the lines of 'Drew Riley' which in actuality was something his native language. Hypnos, taking it as the name he wanted, gave the name to him. To make things easier, Hypnos had asked Mnemosyne to bless Drew with the knowledge of the English language and after one month of some basic classes conducted by Hypnos about what he'd be doing, Yong-Jo or now Drew Riley, was his servant.
For the next 24 years Drew remained as Hypnos' servant until news got round that a cabin for children of Pandia had been constructed in Camp Half-Blood in which Pandia had told Hypnos to send Drew to when he was done. It was also noted by Hypnos that the girl, Hui-Bin who was now Poppy Paradis, had also arrived at Camp. Wanting Drew to have some kind of peace in his life, Hypnos sent him down prematurely, relieving him of his immortality and servant-ship.