Chapter 1:

Lucifer turned from his computer in the closet and peeked through the crack of the closet door when he heard the front door open.

'Emilia...?' He thought as she came in, took her shoes off, and slowly sat down beside Maou's sleeping body. After some time of just staring at him, she readjusted and moved forward. Lucifer took out his phone camera and started filming through the crack, smiling to himself the most wicked of smiles that suited his namesake.

Maou was laying with right arm at his side, the left above his head. Emi had moved to lean over his chest from the side. Legs on his right side, hands placed on both sides of his head as she stared down at him with dead red eyes. Maou stirred from the movement and slowly opened his eyes, disturbed by weight on him.

"You going to kill me?" He asked slowly through half opened, pointed eyes - voice groggy and grumpy.

"Shhh, just let me think it…*sigh* This is what makes it so hard..." She responded sternly, looking out the window with a stoic face.

"...What does?" He quietly snapped back, confusion in his voice. She turned back to stare at him, focused.

"Me, killing you. Whenever you seem to think I'm about to kill you, you just sit there and do nothing. You don't fight back. You just stand there like you accept death. As if me killing you is deserved. And that if I were to do it, there's no point in fighting. That's what makes it hard." She responded back, honestly. Maou looked away, quiet and expressionless.

"Don't you know the saying? 'Actions speak louder than words.'" Emi continued, still looking at his face, her own changed to a half sour expression.

"What…?" Maou responded, eyes snapping back to Emi's face - annoyed.

"You always try to make me spite you, constantly thinking about my mental well-being. But if you try and make me fight you, and you don't even try fighting back - what's the point? I lose motivation." Emi mused quietly. Maou's mouth gaped like a fish, no sound escaped his throat. He had never thought about that.

"*Sigh* That's why it's hard." Emi leaned down and laid her head on his chest, her arm stretched out above his head - just in reach of his hand still resting above his head. Maou remained still, looking down with his eyes but his head remained straight upwards. He saw Emi sigh as she mumbled. "But maybe that's okay."

"What is?" Maou's hand twitched. Emi smiled slightly.

"This. Trusting you. Being by your side. The bickering. You try your best to make sure no one thinks that you're trying to help the hero start a new, happy life." Maou swallowed uncomfortably. Emi lifted herself up on to her right elbow. Her head now over his, hair draping down to the side of their faces, her eyes gleamed red in the shade.

"You know, Maou, there is nothing wrong with accepting this. We both have very long lifespans. If we're going to be seeing lots of each other over the next millennia, we might as well find a common ground to get along. Don't you think?" Emi's hair brushed Maou's eye. He moved instinctively and brushed all her hair out of the way with his left hand, moving it behind her shoulder and placing his hand on her back shoulder blade to hold all of it out of his face. His hand hot from the sunlight that poured through the window, so her silk blouse felt cool in comparison.

"As usual, there's always a part of you that finds its way to annoy me…" He said, absently with an annoyed expression. Emi smiled - a true bright smile. It was radiant as if the sun was shining above him at high noon. He felt her fingers graze the side of his palm above his head. He noticed her face had come slightly closer to his.

"We wouldn't be us without the little things. It's one of the things that make this life interesting." Maou sucked in a breath. Her smile was even more blinding now. Her face was close. Her body was warm and soft. Her eyes glowed, the bright red sparkled, only a touch of the green remained in the corner of her eyes. Her face drew nearer and his mind went blank. Just her smile, their breathing, her hand slowly taking his above his head, his hand pushing her shoulder forward towards him, their noses touching, eyes closing, lips tracing.

A sort of shock wave was felt between them, both their eyes flew open, red stared at red - and bodies became one. Lips merging, hands exploring, but it didn't feel close enough. Maou flipped them over. Another shock wave, bigger. Both continuing vigorously, oblivious to the changes around them with each passionate kiss - each exchange of power.

Emi arched and wings sprouted, spreading across the floor, brilliant and white. Maou's body grew in size, legs changing to hooves, Emi's hair changed to silver, Maou's horns grew. Neither seemed to notice as they continued the personal attack on each other. Stranger changes continued to happen the more they became one. With every kiss, Emi's hair started to change from silver to purple starting at the roots - her newly sprouted wings also taking on the colour change, morphing from her back.

Lucifer stared in shock from his closet room, phone still filming, hand over his mouth. His hair stood on ends from the two shock waves that rocked the Devil's Castle. It felt like something released, something dark. In his entire lifespan, he had never felt a power like that before. He felt a singe and looked up at his hair. It was turning silver. His eyes grew wide in response.

"Oh fuck, oh fuck, oh fuck, oh fuck!" Lucifer threw open the closet door. Startling the couple for a moment as their hands were starting to wander under each other's material. "STOP! The landlady's coming!" Before either had a moment to process, a power ripped them all from the room and out onto the backyard.

TBC