Izaya collapsed backwards as he withdrew and it took a lot of heavy panting for him to regain his breath. Hibari was beyond scowling, he now wore a frozen expression of unmitigated hate that Izaya found extra hot because of the bit of semen slipping from him.
"Wow, that was…intense."
Normally thoughts of time paradoxes would have occurred to him but currently Izaya was still too overwhelmed by sex. And there were more pressing matters such as activating Shizuo's box.
"IZAYA!"
"Shizu-chan! You really are a catboy now!"
Izaya tugged at the fluffy ears and petted the bushy tail.
"Nya…I mean, get the fuck OFF! And- you're shorter and half-naked…?"
Shizuo was very surprised now. Izaya wrapped the chain around his hand so that when he jumped unto Shizuo's back, there would be no fighting back.
"Aw, I want to know, do you still hate me ten years into the future?"
Izaya snuggled against him in what is often called 'glomping.'
"Let go of me right now."
Izaya pouted.
"No! Shizu-chan must like me!"
And with this the one hour passed and adult Izaya suddenly found himself clinging to Shizuo. Unfortunately the chain that kept Shizuo bounded was also sent into the past along with teenage Izaya.
"Eh, Shizu-chan? I was just kidding, just kidding."
From the sofa Hibari had been following this and he sensed an opening here. He did not believe in cooperating but currently something had to be done to bring pain upon this subhuman species of the Rokudo Mukuro kind. No amount of reasoning could now persuade him that this Izaya and Rokudo were not basically the same creature.
"You, blonde guy. There are some extra tonfa on the drawer."
Shizuo reached for those but Izaya was already bolting out of the room. Shizuo gave chase right away. The two of them ran straight into the Vongola party and proceeded to knock them all down once more. Izaya barely noticed and kept on leaping down the stairs with a thundering howl preceding Shizuo's furious stampede. Meanwhile the rope box's effect wore off. Hibari sprang to his feet, tossed on his famous jacket and ignoring the pain that flared up as soon as he landed on the floor he was on his way running after his tormentor and stepping on top of Gokurdera, Tsuna and Yamamoto on his way out without even slowing down. This being the disciplinary committee room there were of course even more tonfa that he grabbed on his way out.
Izaya was used to outrunning one pursuer but he had no experience evading two that cornered him from opposing directions so that he had nowhere to go. For a split second as Hibari poised his tonfa to deliver a blow while Shizuo cracked his knuckles, Izaya was genuinely afraid for his life. But then he was being beamed away and blinking in a vast white space where Byakuran was lounging on a chair.
"Iza-chan! You got yourself into quite a pickle."
Izaya shrugged.
"You know how it is, it's no fun unless there's some risk involved. Neh?"
A snickering voice filled the air above them and no one was very surprised at seeing Mukuro materialize. They were however a tad surprised at his trendy white jacket with matching trim and pink headphones. Izaya was the first to react.
"Hey! I wanted those clothes! Pineapple hair!"
More snickering followed.
"Izaya-kun, it's like you say, it's not the same without the risk. And I'll be taking this as well."
Mukuro magically produced Shoichi. Byakuran almost opened his eyes.
"Oh my, Sho-chan is being stolen from me. Whatever shall I do."
It was with a somewhat sorry heart that Izaya returned to Tokyo but he was already formulating more plans for more time hopping trolling of the epic kind.

In the past, however, Izaya was abuzz.
"I'm telling you, I went to the future and got to do this hot guy that I think is Shizuo's kid!"
Shinra sighed and adjusted his glasses. Not for the first time and surely not for the last time he wondered how and why he had landed himself such a weird 'friend' as Izaya. The term being of course used rather loosely.
"I think that Shizuo's vending machine finally hit you too hard in the head."
"Oh really? Then how do you explain this?"
Izaya produced the chain. Just as they turned the corner, Shizuo appeared and Izaya did his happy dance.
"Shizu-chan, Shizu-chan, nya!"
Izaya proceeded then to latch him with the chain and glomped him all over again. Or for the first time, chronologically speaking that is.
Overhead Byakuran ate a cosmic marshmallow and thus destroyed an entire universe. Such is the life of a crazy egomaniac turned god. He decided to create a new world populated just with Sho-chans. And at this thought he did open his eyes. So much fun to have, so many dimensions to screw with, and so much time at his disposal. Life was grand.
As for Tsuna and co, they all decided that as bad as it was for Byakuran to become some overlord, at least he was not Orihara Izaya. Everyone agreed that this was a good thing. As for Hibari, he joined Shizuo in a quasi partnership of sorts with the sole purpose of eliminating Izaya. The jury is still out on that and Izaya was not even too worried. Instead he developed a new and improved happy dance that included flapping his arms like a yellow birdie as he sang.
"Midori tanabiku!"
Indeed.

The End