The Boy Who Lived, destined to defeat Voldemort, brave Gryffindor student.
Dumbledore guides Harry through increasingly dangerous investigations.
Albus Dumbledore asks Harry Potter to help persuade Horace Slughorn to return and later assigns him the mission to retrieve Slughorn's memory.
Their suspicion-driven rivalry escalates into violent confrontation.
Harry suspects Draco is serving the dark forces, confronts him over the poisoned mead and cursed necklace, and duels him.
The apparent betrayal turns their antagonism into open hostility.
After Severus Snape kills Albus Dumbledore, Harry attacks Snape, who reveals himself as the Half-Blood Prince.
Their mutual attraction becomes an explicit relationship moment.
Harry acknowledges his feelings for Ginny, and they share their first kiss after she persuades him to hide the dangerous textbook.
Their academic relationship becomes essential to the investigation.
Harry excels in Slughorn's Potions class and later pressures him into surrendering the memory about the young dark wizard.
Arthur provides Harry with a clue about Draco's activities.
Arthur tells Harry that the Malfoys may be interested in a Vanishing Cabinet.
Explore the full interactive character relationship map of Harry Potter and the Half-Blood Prince
Related entry on Wikidata (Q3244512), public domain (CC0).