(1) Harry and Ruby, and Hermione, and Neville, and Lavender

He was looking for a specific person. His sister. He'd been hit with the nutpunch jinx many times for calling her that, but she was the daughter of his father's Wife. Ex-Wife. They were raised as siblings. For a few years. And he had been told about what was happening his year. The TriWizard Tournament. He was going to be a Champion and reunite his family. He didn't care that his sister wanted nothing to do with him, she would finally respect him and his father when she saw him holding the Trophy above his head.

Where was she?

~

Lavender was a Gryffinwhore on a Mission. Last year, her Rival turned eighteen a couple weeks before Halloween. Which meant for the majority of her third year, she'd been **** to see her Rival score all the cock she wanted. But now Lavender was eighteen too and while her Rival had a head start on her with the older years, she'd not gotten to any of their yearmates.

And Lavender knew who to start with. She was going to wrap her mighty HH-Cup melons round-

"Neville?! Who th- holy fuck!! Ruby!!!" Yes, Hermione was there too, but Hermione was Hermione despite looking like a well-bred fuckpig. But Ruby, her Rival in Bimbo. Was sucking on Neville's balls and covered in cum and... And pregnant! "We were supposed to get pregnant together!"

Her odd declaration was enough to make the fun stop for clarification. Lavender, blushing in her red microskirt and tie-front blouse, her nipples hard from what she was seeing and her own humiliation.

Blubbering a bit, Lavender finally admitted her Rivalry with Ruby was in part her desire to be Bimbo Girlfriends with Ruby. Dating each other and getting railed by massive studcock together. She wanted to take Ruby to a big gangbang with guaranteed impregnation and have dozens of slutty daughters and bigdick sons with the daughter of Headmaster Riddle.

Ruby, fully committed to sexual service to the Dursleys, broke out into tears and, with difficulty due to her pregnant tummy, hugged Lavender and gave her a, cum-stained, kiss.

Hermione let out an aggrieved huff of frustration. She failed to make Ruby her sexpet, now Ruby was a sexpet with a girlfriend? It just wasn't fair!

"RUBY!?" And now there was Potter to deal with.

~

Harry knew he and his sister had things to overcome. He was a respectable Wizard of high standing and chaste. His older sister, but not old enough to be in the year group above him, was a degenerate whore more obsessed with cock than learning magic beyond housewife cantrips.

He just needed to prove he knew best.

He... Panicked. Sexual congress was afoot and not only was it more than two people of the opposite sex, Ruby was... Was... PREGNANT?!

He babbled, he pulled out his wand. Neville punched him in the face.

When he woke up, Neville was seated, Lavender Brown was bouncing on Neville's penis and drooling mindlessly while Ruby and Hermione, WHO WAS ALSO PREGNANT?! were each sucking on one of Neville's swollen testicles. Harry was left feeling very weak and small and ran out as all as the train stopped.

What Next?
Option 1- checking in with the Dursleys
Option 2- the Welcome Feast
Option 3- James tries to speak to Lily privately
Option X- Open to Suggestions