HP: the Companion of the Sri Lankan Soul Contract

The whole school complained that Snape was partial and only favored Slytherin. No one knows that he locks the cellar every Thursday afternoon and only teaches me alone. He taught you step by step the blood replenishing potions, wolfsbane potions, and high-level magic potions; The Iron Armor Curse, the Silent Curse, and the Guardian Charm were all taught by him. This teaching lasted five full years. I improved the potion and saved Lupin, My handwritten notes became a special teaching material for DA. Bella came to catch me, I raised my hand and the silver light exploded, scaring her away! In the darkness, Snape, who had always been cold and sinister, slightly raised the corners of his lips. The tone is proud and doting: "She was taught by me, so of course she is great."