A/n: Part 6 is a go!

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Harry could feel it, and everyone could see it.

Harry began to grow faster than anything anyone had seen before.

A deep, thunderous moan that echoed for miles escaped Harry's lips as with each passing moment he grew dozens by dozens of feet taller. Ron and Draco stopped the little brawl as Harry's shadow encompassed them fully as they looked up in shock and awe (for Draco) at Harry's ever-growing size.

At the end of his large spurt, he was at least 300ft and counting. While he wasn't growing as fast as he was before, each second he was growing 10ft.

"Such power." Draco drooled.

"B-bloody hell!" Ron gasped.

"So...ngah, so powerful!" Harry's voice boomed as he took a step forward, causing an earthquake as his foot landed on the ground.

Ron was no 82ft tall and Draco was 68ft tall and they weren't exactly stopping either.

"RON!" Hermione bellowed. "GET DRACO!"

Ron understood what she meant and, using his superior size and a dazed Draco (who was too busy taking in Harry's growing form) to land a punch straight into his temple, knocking him out cold. Draco didn't stop growing and neither did Ron, but he at least had one less problem to deal with.

"Here, I'll help you out 'Mione." Ron exclaimed as he carefully tore open the metal cage that contained Hermione, allowing her to fall into his hand.

"Thanks Ron." Hermione thanked. "Let's shrink Draco first and then we'll get to Harry."

Ron nodded as he stomped over to the unconscious Draco and Hermione, using her excellent marksman skill (aka levitating one of the potions) smash the potion against Draco's head, not doing any damage whatsoever, but spraying the potion liquid onto him which stopped the growing giant and actually caused him to shrink.

"Good." Hermione nodded. "Now onto Harry."

"How do we do that then?" Ron asked as he let Hermione onto his shoulder as he grew to 96ft high and growing ever larger still.

Looking up to Harry, who at this point was now 510ft tall and counting, they noticed that he seemed to be in a daze-like state with his eyes glazed over slightly. His penis at this point had become erect and he was now adamantly stroking it up and down with his hands as he fell to his knees.

"Well, I guess we could-"

"Speedormus! Speedormus! Speedormus!" Draco's voice echoed out.

Ron's head snapped down as he found Draco, in his boxers with his wand out and pointing at Harry before he fell over again, unconscious.

"NO!" Hermione cried.

"OOOOOOOHHHHH!"

Their heads snapped to the thunderous boom of Harry's deep voice as his growth speed up even further.

20ft a second.

50ft a second.

100ft a second.

Harry was stroking his growing penis even harder now as, in just a couple seconds he was taller than Hogwarts itself, growing a hundred feet beyond it in only a second as his moans of pleasure stretched even longer.

"What do we do!?" Ron wheezed as he looked at the growing figure of Harry at only a mere 150ft tall.

"T-there must be something I can do..." Hermione mumbled frantically.

"Hurry up Hermione!" Ron stressed as Harry passed 1200ft and then up to 1300.

"I've got it!" Hermione gasped in realisation. "It's the only way though."

"What is it?" Ron asked.

"Doesn't matter to you Ron." Hermione told him. "Eat the potion and I'll be back with Harry."

"You sure about this?" Ron asked.

"Sure as I'll ever be." Hermione muttered. She then placed a sticking charm to her wand so she couldn't let go and then yelled, "Reversei Accio top of Harry's shoulder!"

With that she screamed as she rocketed forward as Ron could only take his potion and shrink down while Hermione travelled at mach speed towards the now 2000ft tall Harry.

A/n: Hoped you liked part 6 people! I bet you're wondering why Draco sped up Harry's growth, eh? Well, if he can't grow, he'll just make Harry grow instead.