"Hey, Iwa-chan, why don't you put sugar in your coffee? Doesn't it taste too bitter?"
Oikawa asked as he sipped on his own coffee, which he had filled with various sugars and creams. His eyes darted back and forth between a tiny bowl of sugar cubes to Iwaizumi's coffee. He then stared at Iwaizumi, who was currently reading a book, blatantly ignoring him. The cafe they were in was quite small, and it didn't seem like many people went there often, but it had a peaceful air to it. It seemed to be out of place when compared to other shops and restaurants in the bustling city. Tapping his finger on the table impatiently, Oikawa frowned after seconds passed by with no response.
"Iwa-chan, please don't ignore me. That's mean." Oikawa childishly whined, putting emphasis on his words by pouting. It didn't last for long though, as he smiled excitedly when he saw Iwaizumi close his book and sigh.
"I don't like sweet things, good enough?" Iwaizumi replied, giving Oikawa a stern look of annoyance. Oikawa leaned in and gazed upon the coffee before grinning devilishly.
"Why not? Is it because you're not sweet yourself-"
Iwaizumi picked up a sugar cube from the bowl and threw it at Oikawa, cutting his words off. It hit him in the nose before falling onto the floor, breaking in half on impact. Oikawa winced and then held his nose, once again pouting unhappily.
"Wow, I never knew that sugar cubes could be that useful. I should keep some in my bag for times like these." Iwaizumi picked up another sugar cube, examining it closely.
"I was just teasing you! How rude, Iwa-chan!" Oikawa grabbed three sugar cubes and plopped them into Iwaizumi's drink, giving him an innocent smile while batting his eyes.
"Oi, what are you doing, Trashykawa? It'll become too sweet." Iwaizumi sighed loudly when he saw Oikawa mouth the words, 'Drink it'.
Oikawa took a teaspoon and placed it in the cup, stirring it quickly. Once he was done, Iwaizumi glanced up at Oikawa, who was looking at him eagerly with enthusiasm. Iwaizumi looked back at the cup, then slowly picked it up, placing his lips upon the brim. He took a sip, but immediately cringed when he tasted the sugar. It was ridiculously sweet for him, and he wondered how Oikawa could even drink his coffee with all of the sugar dumped inside.
"Idiot, I told you it was too swee-"
Iwaizumi's words were interrupted as Oikawa placed his lips upon his own. In shock, Iwaizumi's eyes widened. It only lasted for a few seconds though, since Oikawa pulled away, placing his hand upon his chin as if he was in thought.
"Hmm, it really was sweet."
- - -
A/N
Hello! This is my first fanfiction that I've ever written, and I couldn't help but make it about Iwaizumi and Oikawa. I hope it wasn't too cringey, haha. IwaOi is definitely one of my set ships in Haikyuu!!, and I can never read enough of them. Anyways, I'll probably update this often, but no promises! \(•^•)/
Bye!