When Harry wrestles Draco's “everyday” wand out of his hand at the Malfoy's mansion, he conquers Draco, and therefore the Elder Wand — hidden in Dumbledore's tomb at the time — transfers its allegiance to Harry.
Draco was the owner of both wands at that time. Wizards can have more than one wand, especially if one of them is the Elder wand. The only reason Harry has the Elder wand is exactly because he won Draco's wand in the first place, and then all his wands would follow that wand in changing (or sharing) allegiances.
Harry returned Draco's wand, as he had no reason to keep it when he had repaired the holly wand. He would undoubtedly have returned it as a gesture of goodwill and healing after the defeat of Voldemort.
Harry was taken to the Malfoy Manor after his capture by the Snatchers. When Dobby came to rescue them, Harry used the expeliamus charm to take Malfoy's wand, in the process taking the allegiance of the Elder wand as well.
During his final confrontation with Voldemort, Harry knew that he (Harry) was the Elder Wand's true master. He again cast Expelliarmus, ejecting the wand from Voldemort's hand into his own as the Killing Curse rebounded off his body, fatally striking Voldemort.
Narcissa's greatest moment, however, was when she chose to betray Voldemort in Harry Potter and the Deathly Hallows. Not knowing whether Draco was alive or dead, Narcissa chose to lie to the Dark Lord rather than risk losing her son.
Voldemort hugged Draco as an improvisation and it wasn't planned. Even Tom Felton (Draco Malfoy) was caught unaware which increased the effect. In Harry Potter style, it was like a welcome for Draco, but as Voldemort had never known love, he didn't know how to hug him very well. Thats why they had the awkward hug.
Draco Malfoy's mother Narcissa was cold, cunning and devoted to the Dark Lord. But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
“Dumbledore didn't want to lose his wand at that point and Draco disarmed him. So that meant that the wand gave Draco its allegiance, even though Draco never knew it, even though Draco never touched it. “From that moment on, that wand gave its allegiance to Draco, and it wouldn't work as well for anyone but Draco.”
Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
Draco's refusal to reveal Harry's identity to Bellatrix was not because he liked him. It was because he believed that Harry was the only chance they had at defeating Voldemort. At first, Draco admired and revered Voldemort until he threatened his family's safety.
Actions have consequences – Draco learnt that the hard way. Harry would later risk his own life to save Draco from the Fiendfyre. Narcissa Malfoy would then lie to Voldemort – an extremely dangerous person to lie to – and spare Harry to hear that her son is alive.
The Malfoys are able to avoid serving time in Azkaban, as they provide evidence that helps the Ministry track down the Death Eaters who had fled after the war. It is also probable that, since Narcissa's lie to Voldemort saved Harry's life, the family is pardoned for their crimes.
Malfoy spots Harry and casts a Cruciatus curse; Harry, defending himself, using the Half-Blood Prince's Sectumsempra spell without knowing its effects. To his horror, it gashes Draco's face and chest, spilling his blood everywhere.
Specifically, Draco was jealous of Harry. It was easy to miss because Draco didn't often show his emotions, modelling himself on his cold, confident, calculating father, but J.K. Rowling has confirmed that a lot of his enmity towards Harry stemmed from envy.
Voldemort, seeking to punish Lucius Malfoy still further for the botched capture of Harry, demanded that Draco perform a task so difficult that he would almost certainly fail – and pay with his life. Draco was to murder Albus Dumbledore – how, Voldemort did not trouble to say.
Warning The Trio To Keep Hermione Safe
At the Quidditch World Cup, Draco is quick to sneer at the Trio, and warn them to keep Hermione out of sight - as a Muggle-born, she could well be a target for the wizards rioting and tormenting the Muggle camp-owner.
With that in mind, it's best to think of Dumbledore's statement, "You are not a killer," in this way: "Draco, you are not a killer; you have not killed anyone yet, and you don't have to. The choice is before you.
He attempted to kill Dumbledore, but Dumbledore tried to convince Draco not to perform the task. Draco said that he had no choice. Otherwise, Lord Voldemort would murder him and his family. Dumbledore told Draco that he shouldn't do this, and that Draco was not a killer.
Only recently did I consider another explanation: that Lucius Malfoy is actually an emotionally abusive father, which manipulates Draco toward the Dark Arts.
In Cursed Child – Part Two, Draco Malfoy explains to Harry that his wife, Astoria Greengrass, was sick for many years. Draco says she suffers from a “blood malediction,” which ultimately ends up killing her the summer before Scorpius's third year.
Draco's father is a Death Eater. As a result of the big battle in the Ministry of Magic in Book 5 and as a result of failing to steal the prophecy of Harry from the Ministry of Magic, he's spending his time in Azkaban Prison.
J. K. Rowling stated that the pain from Harry's scar on his forehead was caused by the piece of Voldemort's soul trying to leave his body through the wound it entered to rejoin its master's soul.
“Harry was constantly crushing on Draco. He just couldn't hide it.” In the books and movies, Harry and Draco are constantly at each other's throats, given that Draco's parents are Voldemort supporters and the evil wizard killed Harry's parents.
Draco Is Jealous Of Harry
According to Pottermore, J.K. Rowling herself has confirmed it. Draco is jealous of Harry. He is especially envious that Harry is more admired at Hogwarts than Draco himself is. And that Harry shows a natural talent for flying, one of the things Draco is good at too.