Norway

Wayne Manor had been seen to much reconstruction to restore the manor exactly how it was previously. But being one of many Batcaves across the planet, Norway was one of Bruce's most favoured hideouts as it had a magnificent view of a lake right by the million-dollar house. Despite not using it often, only on special occasions, he felt it opportune to enable his brother and his girlfriend a place to go away for a holiday. When the couple took homage at the house in Norway, the two found joy in the sights as a plan for hiking came up.

Under his breath, (Y/n) said, "Gods, I love you," in admiration of the woman that had her back to him.

Diana whipped her head in (Y/n)'s direction when her ears caught onto what he said more loudly than how he thought it came out. A blush crept on both their faces as he watched the half-naked woman painting on a canvas a picture of the lake. (Y/n) walked up behind the black-haired woman and pressed himself against her, his hands brushed the sides of the large t-shirt she wore along with nothing else. Diana bit down on her bottom lip with a smirk and broke into a fit of giggles when (Y/n) teased her before she drew her attention away from her work to give her boyfriend attention.

"The painting looks amazing, baby," said (Y/n) as his lips brushed against hers. "You look amazing."

"Will you ever let me draw you naked, love?" Diana asked with a grin going from ear to ear.

"Sure. As long as you teach me how to paint as good as you do. I'd love to paint you naked too, Wonder Chick."

Diana let out a hearty laugh and wrapped her arms around his neck, pressing their foreheads together before teasing him with kisses.

"Going for a run soon?" Diana inquired.

"Yeah. Feel free to tag along, but I think it's better I leave you to finish your painting, hon."

"A cup of coffee will be waiting for you... and me, naked... with flower petalsand scented candles to spruce up the room."

Anxiously, (Y/n) dressed himself in workout clothes and made off in a jog to lap around the entire lake whilst listening to Pigeon John.

"Ok, wake up in the morning to the clear blue sky
Turn up the music when I hop in the ride
The windows down let the whole world see
Can't nobody rock it like the little old me

I'm the bomb and I'm 'bout to blow up
I'm the bomb and I'm 'bout to blow up

I got my chucks and my dickies and I put it on black
Banging Sinatra in the black cadillac
My old lady leaning out the whole window
Everybody lookin' when we walk in slow

I'm the bomb and I'm 'bout to blow up
I'm the bomb and I'm 'bout to blow up

Woowo wooo
Woowo woo (everybody singing now)
Woowo wooo

Woowo woo (everybody singing now)
Woowo wooo (everybody singing now)
Woowo woo (everybody singing now)

Ok, 1 for the money and a 2 for the show
But 3 to be a legend even if I'm poor
I ain't chasin' nothin' you gon' have to catch me
And if you wanna taste you gon' have to pay a fee

I'm the bomb and I'm 'bout to blow up
I'm the bomb and I'm 'bout to blow up

Call my mama, in-laws and my little scarecrows?
When they hear my record well they all hit the floor
Babies rock a pose c'mon fill the front row
The homies in the back tip their hats real low

I'm the bomb and I'm 'bout to blow up
I'm the bomb and I'm 'bout to blow up

Woowo wooo
Woowo woo (everybody singing now)..."

Upon his return to the house, (Y/n) panted heavily as he dragged himself to the living room sliding door and kicked off his shoes before going to the kitchen to retrieve refreshments before making off to his shared bedroom with Diana. Instead of finding her naked as hoped, (Y/n) found himself the occupant of the room with no sign of a princess lingering about. Instead of feeling disappointed, (Y/n) found a letter on the bed that he read aloud.

"Dearest, (Y/n),
My apologies that I have left you disappointed of my absence in the early stages of our holiday. But it has come to my attention there is a worldly threat lingering in the darkest reaches of the universe, which is why I have tasked myself with finding all that I can about the Dark One. Your brother visited as soon as you left and told me about strange creatures in Gotham; some that I believe are searching for something called the Mother Boxes - one of which is under secure protection on Themyscira - yet I fear an attack is imminent to retrieve the Boxes.

There is, however, one I recall who goes by the title, The End Of Worlds, more commonly known as Steppenwolf. He, and his army of Parademons - nightmare creatures who feed on fear - conquer worlds for what his master seeks. If he gets his hands on all three Mother Boxes and activates them, it could mean the end of the world. The tribes of Man, Atlantians and the Amazons sought to safekeep the Boxes but now I fear it could be too late. Steppenwolf will return. I love you, (Y/n), with all my heart. And I believe you are a most worthy ally to fight alongside, to the death, even, should we fail. I pray to Athena it will not come to that.

Yours always,
Diana"

(Y/n) let out a curse before making off to a secret elevator that would take him to the hidden Batcave underground. In haste, (Y/n) changed into his costume and boarded the single-seat jet and made off once the jet reached the surface. A three-beep noise caught (Y/n)'s attention as he pressed a button and was instantly connected to his caller, Alfred Pennyworth.

"Talk to me." (Y/n) requested so to be filled in on the details he missed out on as he chartered his course for his home city.

Gotham

There was relative peace in Gotham since crime plummeted as did the reign of the Joker and the mob who laid scattered. In Gotham Harbour, an abandoned facility laid under siege by hostile alien forces in search for the Mother Boxes. A crew of enhanced individuals Bruce managed to formulate - most of the members he discovered on the file he stole from Lex Luthor's archives - to find out the strange on goings on in Gotham. When the team reached the top of the flight of stairs to the centre of the hyperboloid cooling tower, each member leapt across the broken bridge towards the East Tunnel where they caught on to a room full of hostages.

"I grow tired of your silence. Where is the Mother box?" A deep, gravelly voice brooded in the room the heroes half-entered.

A hostage squirmed in the grip of the leader in chrome armour. "Please... we have families."

"Then you have weakness..."

There, Diana formulated a plan of attack with Bruce when the bravery of a hostage drew the leader's attention onto him. Steppenwolf could smell the scent of the Mother Box on him. The new recruit who was the brains of the team acted out of fear when he realised it was his father that was in the grip of Steppenwolf. The Cyborg fired two blasts before tackling his father out of the beast's grasp when Diana was forced to engage. Diana unsheathed her sword and attacked a gunman ordered to eliminate Cyborg when Steppenwolf recognised his competition.

"Ahh, Amazon. But not like your sisters... stronger."

Retracting her blade from the body of her fallen opponent, Diana grinned and tilted her head to the side as did the body of the Parademon behind her. Seeing the challenge before him, Steppenwolf looked slightly to his right at his axe then back at Diana when he dared to grab ahold of it until she flew-charged him through a wall back into the cooling tower where she and Steppenwolf stood on the bridge ready to clash.

Those of Steppenwolf's followers waited impatiently to attack the Amazon princess when her attention was drawn from their master. Until Bruce's intervention with his Nightcrawler vehicle, he was able to buy Diana time to retrieve her sword when both the bridge and the vehicle collapsed. On ground level, the two rivals faced each other off as Diana formed an X with her arms, ready to create a shockwave with her gauntlets.

"You have the blood of the old Gods in you," said Steppenwolf out of respect for his foe for the challenge she put up.

"I am Diana Prince, princess of the Amazons, and you will fear me." The black-haired woman responded in a cold voice before slamming her gauntlets together.

Steppenwolf was flung backwards eighty metres down the tunnel when few Parademons lingered and injured the youngest member of the ground and attempted to make off with him until Diana rescued him, slaying the last few of Steppenwolf's troops for their excursion to Earth. With the Nightcrawler momentarily disabled, it was Cyborg who took control and fired the turret at Steppenwolf before two missiles were added to the barrage.

One missile Steppenwolf evaded and the other he caught in his hand before letting go to the wall of the tunnel before a portal sucked him up, enabling him a swift escape from his enemies who were left to escape a leakage from Gotham Harbour. The appearance of the additional fourth member for the party made his appearance by prolonging the flooding of the tunnel until he was consumed by the water while the other heroes jumped aboard the Nightcrawler that began to scale the wall of the tunnel to the top when Cyborg evacuated the tunnel.

"Did he just bail?" The youngest recruit asked.

The others ignored his comment as they regrouped at a meeting point that overlooked the harbour and the abandoned facility where a few squad cars arrived on scene to share information all could gather before they were invited to go to Norway to the Batcave to recuperate after their first ordeal. It was (Y/n)'s lack of company that concerned Diana while Bruce contemplated the use of the Mother Box Cyborg gifted them just hours ago.

When the team were introduced to the Batcave, they immediately grew accustomed to the last couple of days they had left as the team did their own separate thing to pass the time while Bruce contemplated the use of the Mother Box - the pure energy it possessed contained cellular regeneration yet volatile. But used properly, it could bring someone back to life.

Two days later...
Russia

The end was nigh and the team had only begun in preparation to launch a full-scale assault on Steppenwolf's location in the countryside of Northern Russia. While the team contemplated their plan of attack, it was Diana who couldn't help but zone out of what the men were discussing. Not seeing (Y/n) in a few days concerned her for going silent, yet she knew he would not let her down. Not now. Once the team were ready to invade the land Steppenwolf adopted as his territory, Bruce allowed his team to begin their assault whilst he provided air support.

Though it didn't take long for the swarm of Parademons that he irritated with high-frequency noise to pursue him to down his ship, Bruce was already set in the Batmobile to continue the assault by taking a large majority of fire from the enemy. With the team providing support, it was Bruce who provided an opening for his teammates to breach the main tower where Steppenwolf hid.

"Hey! Anybody notice these guys acting like Stormtroopers?!" Barry yelled as he sped along the battlefield.

"They're not avoiding us on purpose. They're focusing on something else." Bruce responded nonchalantly.

Distant thuds grew stronger and stronger as in the distance, a colossal beast made of stone, concrete and dirt marched towards the tower, absorbing the attention of the Parademons who used their guns and cannons in an attempt to obliterate their largest threat while others resorted to clinging onto the body itself to beat it up.

"(Y/n)... Hurry! To the tower!" Diana spoke breathlessly.

Without any time to waste, Cyborg, Aquaman and Diana breached the tower to draw Steppenwolf's attention onto them while Barry formulated a charge around the base of the tower. Knowing they had to stall, Diana and Aquaman distracted the puppet of the Dark One. Alas, they could not hold him off for long. What made matters worse was Barry being injured that the charge he desperately attempted to hold broke, dooming planet Earth. Slapping his lesser opponent away, Steppenwolf focused on Diana as his relentlessness caused her to lose confidence when he disarmed her and used her sword against her. 

With a firm thrust, Steppenwolf impaled her through her stomach as the others stood by and watched helplessly as her body fell backwards as blood seeped from her wound. Another stood in Steppenwolf's way as a mild clang rang out when his axe hit the shoulder of the last Kryptonian. With a light scold, he blew a frost onto the blade of the axe, cancelling its electric charge before shattering the weapon with ease. Enraged, Steppenwolf stood his ground against Superman but failed to do anything to hurt him when the other heroes took a turn in beating up Steppenwolf. Pinning the New God to the ground, Superman applied a strong punch that shattered the armour encasing his chest.

Using his laser eyes, he burnt a horn off as he continued to relentlessly beat Steppenwolf until a portal captivated the three heroes. There, the Dark One stood with his apostles behind him. When the Mother Boxes became one, the box emitted a bright glow that turned into an explosion. Through sheer willpower, Barry mustered every ounce of strength to risk his life in exchange that time be reversed to the few precious moments before the Boxes formed into one.

"SUPERMAN!!" Cyborg cried.

In a split second, the Man of Steel helped Victor pry the Mother Boxes apart just in time for them to see Steppenwolf get back to his feet. Relief flushed over the team when they noticed the Amazon alive and visibly uninjured due to a strange factor that resurrected her. Unaware of the threat behind her, Diana let out a smile to see her allies succeed in dismantling the Boxes when concerned expressions grew on her teammates' faces. 

Slowly, the Amazon princess turned around when she laid her eyes on Steppenwolf rearing a fist back to strike her in the face until there was an intervention.A fist collided with the New God's cheek, stunning him which provided an opening for his attacker to apply a series of precise attacks on his body that created pulses of agonising pain. The others smiled at the sight of their ally having a turn in beating Steppenwolf before the most dangerous conqueror in the galaxy.

"DON'T! YOU! EVER! TOUCH! MY! WOMAN!" The man bellowed punch after punch.

"(Y/N)!" Diana boomed over her boyfriend's rage.

The (h/c) man looked over his shoulder before grabbing Steppenwolf and threw him towards his ally with the trident. Five blades pierced Steppenwolf's chest as the warmonger roared mightily before he was punched by Superman towards the portal where Diana lined up a shot and decapitated the New God, leaving the body with the Dark One just as the portal closed.

"You guys alright?" (Y/n) asked breathlessly, eyeing the black-haired woman in particular. "Baby? You good?"

Diana smirked and strolled over to her boyfriend, sheathing her weapons and threw her arms around his neck and planted a firm kiss on his lips. "I thought you'd abandoned us."

"What do you take me for? You know me better than that."

"Oh, I know you very well in every way."

"We won," another voice spoke out.

Diana turned around with her arms still clutching onto (Y/n) as the ground all admired the Kryptonian who adopted a black-suit version of his blue and red.

"I guess congratulations are in order?" Superman said in a pleasant, warm tone.

Bruce nodded his brother's way and received one in return. As the men held separate conversations, (Y/n) stole Diana's once more and moved her arms to hang in front of them with their fingers interlocked together.

"Saw part of the fight with you and that big, ugly bastard. He didn't hurt you too much?" (Y/n) cooed as he tucked strands of hair behind her ear.

Diana winked. "I'm fine. But I'm proud you're mastering your abilities, (Y/n). I-I've been wanting to talk to you about something for a while now. I don't want you to panic or anything, but I believe that for the reasons that will benefit us both, I propose we no longer pronounce ourselves boyfriend and girlfriend."

Shock hit (Y/n) like a deer caught in headlights. It was as if his worst fear had come true; that she no longer loved him. His eyes began to shine from the light when Diana acted quickly to rectify her proposal in a manner that would have his heart almost immobilised in his chest through producing a small leather black box in her palm as she lowered herself onto one knee.

"Will you, (Y/n) Wayne, accept my offer to become my husband?" Diana muttered with a hopeful look plastered on her face.

(Y/n) nodded and allowed her to slide the ring on his ring finger. "I accept."

The others broke into applause and cheered heartily as (Y/n) pulled Diana against him, their lips smothered together as Bruce stood by with a soft grin.

When the couple pulled apart, Diana whispered in apology. "Sorry I didn't begin my proposal right. I-I never proposed to anyone before and I think I made a really poor choice of wording."

"It's okay," he chuckled. "Now, let's go home, shall we?"

"Yes. Let's."