Apologies to J. K. Rowling for this gender tomfoolery.

All Harry Potters are in their final year of Hogwarts and thus 18+

"Sure was nice of Hermione to brew us a batch of potion before she left," Harry said, lying back on the divan before the roaring fire.

He took another sip of his potion-infused hot cocoa. His breasts swelled another cup size, straining against the fabric of one of Ginny's hand-me-down bra.

Over the christmas holidays, they had almost the entire wing to themselves. Ron crossed the Gryffinder common room and cuddled up next to Harry.

"So knows how draughty Hogwarts gets in winter," Ron said, tugging down Harry's clothes to free his bouncing tits, which fell into Ron's hands. "And she knows how horny I get without her here. Sure was nice of her to let me use you like a hot water bottle though."