Adonis Liu, first known as Liu Lin, was born out of wedlock to Chinese pure-blood father Wyatt Liu and Thai half-blood mother Sienna Watakeekul. The couple having met during their days at Mahoutokoro, decided to move to England together to start a new life. This proved disastrous for the couple as soon after their move, Sienna had gotten pregnant and the reaction she gave Wyatt over it wasn't a good one. The pregnancy drove the couple apart, and pretty soon Sienna went back to Thailand with Wyatt's unborn child.
Losing Sienna was a lot for Wyatt to handle, not only did his school love leave with their unborn child but now Wyatt was alone in England with a house to pay for that was meant to be split between him and his former girlfriend. The split left Wyatt needing a roommate in order to pay the bills, lucky enough for him he found one within a couple months. A woman by the name of Harriette Chen had stepped into the position rather naturally. While the pair had never met before, Wyatt and Harriette just seemed to click. As Harriette moved in, it wasn't long until a romantic relationship started brewing between the two, with Harriette helping Wyatt get over Sienna and his son.
Wyatt never seemed to have good luck, as Harriette also became pregnant two months into the relationship. However, unlike his last time, Harriette was happy with the pregnancy and her relationship with Wyatt. The pregnancy actually resulted in a tearful engagement and speedy eloping ceremony between the two. A little more than three months after their marriage however was when things took a turn, as Sienna made a return with their newborn baby boy. He had two names, Lin for his Chinese heritage and Jirayu for his Thai heritage. Sienna truthfully didn't want to keep the baby, but simply giving him up for adoption wasn't the route she wanted to take. Having returned to England and having seen how happy Wyatt was with Harriette, she knew that leaving baby Lin on her former lover's doorstep was arguably the best option she had. With a small note describing why she had left Wyatt and that the baby was his, Sienna left once again without saying a word.
Shortly after being left on the doorstep, Wyatt found his son outside and after reading the letter was both relieved and scared. Relieved because he was finally able to meet his son he spent everyday thinking about, worried however because he wasn't sure how Harriette would feel about the thought of raising someone else's daughter. While the idea initially was met with plenty of skepticism and arguments, but Harriette eventually warmed up to the idea of having three kids instead of one, and while Wyatt's first child wouldn't be that much older than their child, she thought it would be nice for them to have an older brother. That along with the fact that she had already fallen in love with the baby boy right away. With Wyatt having full custody of his child and Harriette also taking steps towards becoming the boy's legal mother, the couple gave Lin the English name of Adonis.
Not long after, in January the following year, Harriette gave birth to not just one but two kids. A boy and a girl with the names of Apollo and Aphrodite respectively, to fit the theme they created with Adonis' English name. While their hope of having an older child proved troublesome, as Adonis was still so young that it was essentially like having triplets, and having the three all in diapers and barely been able to crawl was a bit of a hassle. Regardless, the couple did their best to raise all three children at once while Wyatt also maintained his wizarding and muggle jobs in order to support the family.
Despite growing up with such a small age gap between him and his younger siblings, Adonis was the protective older brother his parents had hoped for. Having been born so late in the year he was in the same year group as Aphrodite and Apollo, the three were known to get rowdy in class. And if anyone picked on either of them Adonis was quick to get into a fist fight for them. A bit of a bruiser of a child, Adonis was quick to defend himself or his siblings and not really think about the consequences, which often resulted in him getting in trouble a lot.
As he neared the age of nine, Adonis was getting in yet another fight to stop someone from picking on Apollo. It was this instance that his first signs of being a wizard kicked in and as Adonis went to go push the kid to the ground after he himself had been punched in the face. The mixed adrenaline with the anger Adonis had fuelled itself into his magic and before even laying a hand on the kid to push him, a force of magic surged through him and knocked the kid into lockers in the hallway. Whispers quickly started before Adonis even knew what had happened, after grabbing his backpack he and Apollo quickly ran from the hallway and hid in the bathroom. While Apollo dabbed away at his brother's split lip, he asked if Adonis knew what happened. Being the older of the two Adonis didn't want his brother to worry. Sure their parents were both wizards, but they were never really told about how magic started or things of the sort.
Adonis was initially scared to tell either Wyatt or Harriette, but when the school called to tell them Adonis was suspended for three days due to what happened, the conversation was brought to him. While he was obviously in trouble for what he did, his parents did explain that it was only partially his fault and that his magic was just bubbling to the surface and that he shouldn't worry. It was at that point that Adonis somewhat pulled back in his muggle studies and learned more and more about the wizarding world. Not long after him Aphrodite and Apollo followed soon by having their magic kick in and by the time Adonis was twelve and the twins were eleven, it was time for all three to start their first year at Hogwarts after earning an acceptance letter each.