The full moon shone bright as it surfed gracefully toward the unlit room. The gentle aurora cascaded to illuminate a simmering couldron, fueling the cooking potion's final breath before it was finally completed.
At the desk's edge, the resting head of Harry Potter rejuvenated, his droopy eyes scanning the room before finally resting at his piece of genius. The potion let out one final withering puff before settling still, having completed it's prime directive.
"Ooh, it's finally finished, has it?" Chuckled Harry, not expecting an answer. He knew he was alone. He had made sure of that.
Grabbing an empty potion flask from the shelf to his right, he carefully scooped the solution into the flask, before sealing it and silent-casting an unbreakable charm on it. He then pocketed the potion in his bottomless bag. Confirming that he had everything, he apparated to his next location.
Arriving at an inconspicuous room, if you don't count the several markings on the floor, Harry stepped into the large, circular drawing and retrieved the unnamed potion from his bag before chugging it.
Gagging at the sudden taste, he complained to the presence of none. "Fuck, that must be the most awful tasting potion ever, and that's coming from me!"
Before he could go off on a tirade about the taste, he snapped back to his original objective.Tapping the runic symbol at the center of the floor with his wand, he poured all his magic into powering the ritual.
"C'mon baby, you can't fail me now, not when we are so close"
By that point, the effects of the potion began to take effect. First, he became light-headed, although that might have been due to using up all of his magic.
After that, he really felt the potion, if his scream of pain was any indication, along with his drop to the floor.
"AHHHHHH! Bloody hell that hurts!"
His words soon became incoherent, as the pain only increased. The runic array began to glow, the pure magical power that Harry poured into the ritual caused the ground to shake.
"Hahahaha, here I come fuckers! You'll rue the day you decided to cross Harry James Potter! There is nothing you can do to save yourselves, not again! Mwuahahaha! This time, I won't let anything happen to you, Hermion—"
And with a final blinding flash, Harry Potter ceased to exist in this world.