It wasn't like this type of thing had happened before. It was natural now. As if it was a routine. Then again, the younger male hadn't exactly been ready for the first time it'd happened.

"What's wrong?" Sounded the smooth voice of the older, yet smaller, male behind him. It almost sent chills up Eren's spine as he felt arms wrap around his waist.

"N-Nothing..." He breathed as he glanced back at him and bit onto the inside of his lip, leaning back into the smaller male that was sitting behind him. "Just thinking..." He breathed quietly and closed his eyes as he felt lips upon his neck.

"About?" The elder purred as he gently grazed his lips along Eren's neck, delighted by the shiver that he got from him. His sharpened canines brushing against the sensitive part of the others neck, who gave a small groan in reply to it.

The bite itself was unbelievably painful, but Levi had his ways of making the pain subside. Unfortunately, they had no time for such events at this time. This wasn't an often occurrence but of course, sometimes their lives outside of their apartment was just a bit too invading of their private time.

This was simply because, half of Levi's friends had keys to the apartment from previously living there or because Levi saw it fit that they would have keys whilst the small male was gone so they could check on Eren. Who was under a sort of 'house arrest' until Levi could trust him. This would just about be never. But the simple reason for that was, Eren had a talent for getting himself into trouble.

"T-The first time this happened…" The green eyed boy stuttered as he tilted his head the side and closed his eyes, gently gripping onto the sheets of the bed to try his best to prepare himself for what was about to happen.

The first time this had happened was after Eren got himself into a fight in the street just outside of where the two lived now. He got beaten badly and was bleeding heavily, unable to move himself from the alley that he had been left in. That's when Levi found him, smelling the blood and going to it like a moth to a flame. Of course, as soon as Eren was out of danger, Levi took no hesitation in taking the first, of many, delicious bites of the boy and indulged himself into the others luxurious taste that the steely eyed male soon got addicted to.

"That was... over a year ago…" Levi whispered into Eren's ear, gaining yet another shiver that rippled throughout the boy's body. Whilst Eren was distracted and about to say something, he bit down into the male's neck.

Eren let out a small cry of pain as his body lurched and he closed his eyes tighter. "Fuck..!" He whimpered and reached a hand back, gripping onto the back of Levi's head so that he could pull him off if he got too far with it.

5 minutes after, Levi pulled away, licking at the puncture wounds to get the last dribble of the others sweet blood then licked his lips. Eren on the other hand, was left breathing heavily, slightly pale and waiting for him to be laid down.

"While I'm gone, you're not to leave, got it?" Levi whispered into Eren's ear and the boy nodded, his eyes meeting the others as he was laid down and the shorter male stood up.

That's simply how it was.

Levi had business to tend to and Eren was only good for getting them all in trouble.

Not something either needed at the time.