Drarry is the slash ship between Harry Potter and Draco Malfoy from the Harry Potter series.
Draco Malfoy became Harry Potter's rival. Draco came from a pure-blood family that believed strongly in blood purity. So, he bullied and insulted those who were muggle-borns and sometimes Gryffindor. He was jealous of Harry Potter being a hero. His ambition was to become like his dad. The two boys were always extremely obsessed with each other, and Draco kept bringing up the fact that Harry denied his friendship in their first year (this because Harry had heard a lot of bad things about Slytherin from Ron Weasley, and Draco had insulted Ron). In The Prisoner Of Azkaban movie, Draco drew a picture of Harry that was magically moving, he folded it to a bird and blew it to Harry when they were in the classroom. Things like this happened a lot throughout the books and it makes you wonder if they really, deep down, hated each other. Voldemort asked Draco to assassinate Dumbledore but he failed to do so. A year later when Harry was brought to Malfoy Manor to be given to the dark lord. Draco was very reluctant to identify him, even though he knew it was Harry. During, the battle of Hogwarts Harry saved Draco life twice. One against Crabbe's Fiendfyre and from a masked death eater. There is also a theory that only aplies to the movies, that in The Chamber Of Secrets when Draco ripped out a paper from a book in the bookshop, it was the same paper that Harry found in Hermione's hand when she had been petrified. The canon story says that she ripped the page from a library book, but Hermione would never do that. In The Cursed Child book, Harry's and Draco's sons becomes best friends, and when they're in danger Harry, Draco, Hermione and Ron rescues them.