Izaya had more than just kept his promise and Shizuo really shouldn't be surprised.

May the fourth has been hell for him just as Izaya wanted. He was probably watching from somewhere and enjoying Shizuo's misery. But Shizuo was stubborn and since he already promised to celebrate with Izaya then he was going to Celebrate with Izaya. Come hell or high water. Doesn't matter to a monster anyway.

Easier said than done. Shizuo was attacked by 3 different gangs on his way to school, got late, got attacked again in school, got detention and didn't get to meet Izaya all day

"Damn it! Where the hell is that flea?" Shizuo screamed. They were in the hallway. School was over and it was detention time…for Shizuo at least

Izaya smiled. It had been a long time since he had time for himself. Taking care of two little kids could be a pain. But today had been fun. He had almost gotten Shizuo killed and had managed to get him to detention.

Now he could have some peace reading some of his favourite books in the library

'It's been far too long since I came here'

Cause Mairu and Kururi were sleeping over at a friend's place. He had the whole day to himself and more than enough time to donate to his books and the occasional humans he could see from the window.

After all school was long over and there was no one here seeing as how it wasn't even the exam season.

By the time it was evening, Izaya was lost in his book. But that didn't mean his senses were dulled. So when the door to the library opened, he already had a knife ready in his hand.

"Shitty Flea!" Shizuo greeted

"Shizu-Chan!" Izaya smiled and stood up from his place.

"Stupid Idiot you didn't have to send so many gangs after me! You almost destroyed your own gift"

Izaya was surprised and didn't bother hiding it. But a moment later the usual smirk was back in its place.

"What do you mean Shizu-chan? And how did you find me?"

"Following your scent is easy in an empty place Flea. And here this is what I meant"

He tossed a book towards Izaya which he easily caught, and proceeded to remove a small box from his bag. Which also, he gave to Izaya

"Happy Birthday Izaya"

Izaya looked at the book

'History of the world'

'Shizu-Chan I've read this book'

He then opened the box

A slice of chocolate cake

'Shizu-Chan I hate sweets'

But he smiled

He smiled a real, genuine smile

His gift

It was his gift

For him

For his birthday

He was happy

And the shitty Flea stood there holding the book close to his heart like it was something precious and looking at the cake like he had never seen one before.

And he looked up and Shizuo saw the smile, he saw the red eyes glint in the background of the sunset and suddenly he couldn't look at him anymore

So when Izaya said thank you it felt like his heart was pierced by one of his knifes and Shizuo had to clench his chest to reassure himself that he was okay, that Izaya had not actually cut him.

"I uh…Hope you like it"

"I hate it Shizu-chan" Izaya giggled, Shizuo blushed

"Fine then give it back to-"

"NO!" Izaya frowned and held the book even tighter to himself

Shizuo looked away

'Stupid Flea! Why does he look so happy'

As if having read his thoughts, Izaya spoke up

"Shizu-Chan I'm really happy today. So as an expression of my gratitude I will make a promise to you today. I Promise to stop sending gangs after you. From today onwards, I shall be the only one fighting you"

Shizuo looked at him, surprised of Izaya's words. But the smile he saw made him smirk.

Izaya was such a brat

"Oh yeah well then I'll make a promise to you too. I'll celebrate your birthday with you every year. If you kill me, I'll come back as a ghost to celebrate with you. If I kill you then I'll go to your grave every year to celebrate with you"

Izaya couldn't help but laugh

"Deal"

As the sun set in the distance, two mortal enemies enjoyed each other's presence.


A/N: Tried to be cheesy. Sorry if it's short