On the Hogwarts Express in 1991, Desiree Selwyn broke into the last carriage to escape the commotion and saw Theodore Nott's suspended potion test tube splashing in the bumps. The moment she instinctively cast the buffering spell, he condensed the liquid with his bare hands - this precise combination of spell and potion became the first encounter between a pure-blood genius.
Under the Sorting Hat, Selwyn's talent for fire spells and Nott's star magic shine separately. When the shadow of the snake in the secret chamber envelopes the castle, and when the Dark Mark burns the night sky, the alienated observer and the blazing innovator are forced to stand side by side: she deciphers the secret language of the astrolabe left behind by her mother, and he unlocks the time pocket watch sealed by his father. Under the aurora of Norway, the "star flame" born from the fusion of twin blood burns out the dark creatures; on top of the observatory, the kiss that reverses time becomes the key to anchor the battle.
Voldemort glimpsed the power of soul connection, and the altar chains wrapped around seven pure-blooded sons. On the night of the decisive battle, Desiree jumped into the crack of time and pierced the star flame into the source of Tom Riddle's ambition; Theodore stood in the burning Hogwarts and used the life link as the fire to rekindle the guardian spell. When the morning light pierces the smoke, the silent stars finally surrender to the flames - their names are engraved on the title page of the potions book, and they are also imprinted in the love beyond time.
Intention: "We are not the pawns in the prophecy," he wiped away the blood on her cheek in front of the broken mirror of time, "we are the sparks that reshape the law."