Do not own SVTFOE

Prologue: Debt to Darkness

If Solaria knew what was to come, she would have never insisted on a military patrol out for monsters.
She left her daughter to take care of Mewni while she was away to battle the forces the evil. Though she no longer posses her wand, she was a warrior and proud of it. Solaria understands Eclispa's fears and concerns, but years of peace and lack of combat has made the Queen of Mewni… Uneasy. She was Solaria the Monster Carver and she will protect her kingdom to her last breath. The Warrior Queen then looked upon the picture that her daughter once drew at a young age, sighed and kissed it.
"Good night, my darling. I'll be back by dawn." Solaria promised as she blew out the candle and slept in her tent.
As she and her men slept in their tents while lookout kept watch of any enemy troops, monstrous eyes appeared from the dark leaves of the forests. The lizardmen known as the Septarian forces, being led by their fearsome leader Seth of Septarsis awaited the right moment to strike.
"L-Lord Seth." A tiny squeaky voice from behind the Ancient Septarian whispered.
The lizardman shifted his eyes to a purple Septarian with armor who looked very nervous.
"Are-are you sure that we should be doing this? King Globgor has forbade-…"
"Globgor is a fool!" Seth snapped causing the monster warrior to fall into the marsh and quiver.
"If it weren't for his strength and power, I would've been King and the Mewmens would have been eradicated. This is our chance to avenge our brothers, sisters, mothers, fathers, and our very children for the mass slaughter that this wretched witch and her family for the subjugation upon the land we had own long before them." Seth announced as his army agreed with him, "We must do this now. This will prove to all Mewni Kind who's the true rulers of the land."
The army cheered quietly as they prepared their attack, unbeknownst to them that a certain monster was watching as it was flying away to report this to the King.
Without warning, the scouts were attacked and before the monsters could finish them off, they sound an alarm to warn the warriors and their queen! A fearsome battle commenced as bodies fell, both Mewman and Monsters!
It led to an intense confrontation between Solaria the Monster Carver and Seth of Septarsis! Though despite her valiant nature and strength, she was no match for the ancient Septarian's power, not without her wand! She was unconscious and wounded as Seth was ready to end her forever.
"Once the Great Solaria is no more than dust, ready to receive the same pain as did our kind, her daughter and brother will follow suit and the Butterfly line will be no more," Seth smirked as he raised his sword to strike down the queen.
But the blow never came.
For Globgor pushed Seth away from Solaria, shielding the injured queen! The Monster King spotted a Mewman soldier on a War Unicorn and flung the unconscious queen into his arms!
"Take your Queen and the rest of your army away!" Globgor boomed the stunned warrior.
He did so, calling back the troops to Mewni with their injured queen, leaving two separate monster armies, an extremist Septarian, and an angered King.

A few days later at Mewni…
Solaria awoke to find herself in the infirmary with her daughter Eclispa sleeping in a chair next to her.
Her moans woke the princess up as the princess grinned and teared up with happiness that her mother woke up.
"Oh mother, I am so happy that you're awake!" Eclipsa cried as she hugged her bandaged mother.
"E-Eclipsa, where am I?" Solaria wondered as the Princess of Mewni called for others to come and see that the Queen was awake.
The Magical High Commission, Jushtin Butterfly, Alphonse the Wise, Mina Loveberry and many nurses and doctors came running in, checking on Solaria and speaking over each other.
"Enough! What happened on the battlefield?" Solaria ordered.
"My queen, you and your platoon were attacked by an army of Monsters led by Seth of Septarsis!" Mina reported.
"I know that. What happened after I was subdued? What were the casualties?" The Queen of Mewni demanded.
"Half of your men were slain. But that was not the only peculiar thing that had happen when you were injured, sister." Jushtin answered, bringing curiosity to Solaria.
"What do you mean?" She demanded.
Alphonse then whistled to the lieutenant, who came in with her arm in a sling.
"Tell Queen Solaria what you told us." Omnitraxus Prime ordered through his crystal ball.
"While Seth and his army were barring down at us with a hunger for our blood, the Monster King, Globgor and another monster army came out of nowhere and stop them! He gave you to one of our scouts and told us to flee. He saved your life." She reported.
"What a load of horse manure!" Mina shouted.
"I'm not lying, we all saw it!" The lieutenant growled as they were both ready to fight.
"Baa!" Lekmet ordered in his native tongue.
"Chancellor Lekmet has ordered you both to stop. You're free to go, Lieutenant." Rhombulus ordered, then the warrior bowed to her superiors and left.
"It's obviously a trap. A set up to have us lower our guard." Solaria scoffed as she felt pain in her arm, causing the nurse to carefully lie her back down.
"Sister, I don't think you understand what this means." Her brother said in a serious tone that surprised her.
He then revealed an old book of Mewni's Sacred laws, turned a couple of pages to reveal an old law that must abided by all rulers of Mewni.
"According to the Law of Mewni, forged by the founders of Mewni themselves, "A debt set by queen and other, must be paid. No mater Mewman, Pony Head, Demon or Monster, the law cannot be swayed." Jushtin read as it angered the queen.
"A debt? To a monster?! Never!" Solaria snarled.
"Solaria, we don't have a choice. As Queen of Mewni, we must repay the debt. "No mater Mewman, Pony Head, Demon or Monster, the law cannot be swayed," Alphonse spoke.
"The law must be upheld, Queen Solaria. No matter the unpleasantness." Reynaldo the Bald Pate reminded.
"Please Mother, at least see what G- I mean, the Monster King wants. He did save you." Eclispa pleaded with her cute puppy eyes that she knew her mother couldn't resist.
Solaria growled and sighed then turned to Alphonse.
"I want you with a platoon of warriors to leave for the Monster Kingdom." She sighed as Alphonse gave a salute and made preparation.

Later at night, near the Forest of Certain Death…
The team of Alphonse and knights arrived at the monster boarders as monster were ready for a fight.
"Wait! We've come to speak with King Globgor, not to cause trouble." He assured them with his hands up.
"You better, if you are lying, we will not hesitate to eat you." A female monster warned as the man of peace gulped.

At the monster temple…
The Mewmen delegates arrived at the throne room of the Monster King, Globgor, who held a stern look on his face.
"What does the loyal followers of Solaria wish to speak with those you considered inferior?" Globgor huffed as the Mewmen shuddered.
"Please, K-King Globgor. We are-are h-here o-on Q-Queen Solaria's behalf t-to thank you for rescuing her and her remaining troops. She and all of Mewni is in your debt and we wish to repay it." Alphonse explained with fear in his voice.
"Wow, your majesty. You humbled the fearsome Solaria herself and probably humiliated her." A monster of Globgor's court muttered as the others laughed.
"There is no need of a debt, elderly Mewman. For the fault is squarely mine. If I had stifled Seth's talks of hate, the attack would have never transpired." The Monster King assured, "Well, Seth and his followers are no longer welcome here. I sought to that."
"Neither the less, a debt has been placed. We, the people of Mewni grant one wish to Prince of Darkness. Name anything you desire, and it will be yours."
Anything?
The monster could have the Kingdom of Mewni.
They could have every participant in the monster slaughter, burned.
They could have all the children of Mewni taken and eaten.
They could have Mewni wiped out and eaten.
They could have the royal wand and destroy Solaria with it.
But Alphonse never expected what the Monster King, the very Crusher of Skulls and Prince of Darkness desired, and he could tell that neither did Globgor's own court could have predicted.
"I want… the hand of Princess Eclispa Butterfly." Globgor answered, stunning everyone.
"You're going to cut off my daughter's hand?!" Alphonse gasped in terror.
"No! no, I mean that I wish to marry her. My one request is that Eclipsa Butterfly will become my bride." Glorbgor explained as the Mewmens were shocked by the Monster King's demands.

The next morning in the Bureaucracy of Magic …
"HE WANTS WHAT?!" Solaria boomed with her face glowing red with rage.
The MHC, Mina, Jushtin and a very quiet and blushing Eclipsa stood with Solaria in the Bureaucracy of Magic as they heard the news of what Globgor wished to repay the debt owed.
"King Globgor requests that Eclipsa be his wife." Alphonse reported in.
"THAT VILE, GRUESOME, IRRIPUDIPAL-!" Solaria cursed.
"My Queen be careful, or you'll break a blood vessel! I will personally travel to the Monster Kingdom and bring the Head of Globgor to you to keep dear Princess Eclipsa safe." Mina vowed.
"That won't be necessary, Mina." Reynaldo assured as he stopped the Solarian warrior from murdering monsters, "Globgor isn't a fool. Despite being a monster, he is a brilliant strategist."
"Baa." Lekmet agreed.
"Exactly, Chancellor. Globgor wants the war to end, regain land for the Monsters and keep an even footing with Mewmens. Marrying Eclispa will end the war and bring benefits for both races." Reynaldo explained.
"You must be joking Chancellor, Reynaldo. Globgor is dangerous." Omnitraxus Prime reminded.
"Plus, his monsters are unpredictable. They could level Mewni from the inside out." Hekapoo added as Rhombulus was getting restless.
"Let's just go, kick butt and Crystalize them!" The Crystal Warden boomed as he was getting ready to brawl.
"Wait Rhombulus, I figure out a way to keep peace between our two kingdoms. Look." Jushtin pointed out as he revealed something in the old Books of the Butterfly, "If we have Globgor sign a Blood Oath to never harm Eclipsa or her people as well as his monsters, we could keep everyone in Mewni safe."
The MHC came over to the book that the Boy Queen was reading and smiled. This could really work, the answers and prayers to their problems.
"I don't care! That monster will never be anywhere near my daughter. Besides, I have already arranged Eclispa to marry Shastacan of the Spiderbites. If I back down on that deal, the Spiderbites will see it as disrespect." Solaria scoffed as Mina was getting ready to fight.
"Let's just croak this toad! Monsters need to be put down." Mina growled.
"Be quiet Mina." Jushtin ordered then turned to his sister, "There is another way to keep all kingdoms happy and satisfied. The Polygamy act of Soupina the Strange can allow a Princess to marry two kings in times of keeping peace. Meaning that we will fulfill our debt to Globgor and keep the Spiderbite appeased."
"Eclipsa, will you be willing to do this?" Alphonse asked his daughter as everyone turned to her.
They should hear her opinion since she was the most involved in this.
Eclipsa smiled and stood in front of them all.
"If it brings harmony and peace, stopping the violence once and for all, I'll do my part in a heartbeat." The princess of Mewni answered as the Commission smiled.
"Eclipsa, you can't be serious. You're marrying a monster that tried to eat you!" Solaria fussed.
"I know, Mother. But Globgor wants peace and is willing to change to get. It is my duty as a princess to do anything for Mewni." Eclispa smiled gently, speaking half-truths.
Yes, she was willing to bring peace to Mewni, but this is her only chance to finally marry the man of her dreams. Globgor and she can finally be together, even though she will have to marry another person, especially someone as repulsive as Shastacan. This was a dream come true.
"Baa." Lekmet humbly spoke.
"Lemet is right. You are doing a very brave thing, Eclipsa. Mewni will never forget this heroic deed of Sacrifice." Omnitraxus bowed as did the rest of the Magic Commission.
"I still say no!" Solaria growled.
"Then let's put it to a vote. All in favor of my plan say aye." The Boy Queen announced.
"Aye!" All but Mina and Solaria voted, causing more anger and frustration.
"It's official, send word to Globgor that we accept the terms of the debt," Reynaldo grunted as he sent a messenger bird to Monster Temple.

Two days later at the secret meeting place…
Eclispa waited for Globgor to arrive as she was suddenly picked up by the size shifter and the two began to spin around and laugh.
"Oh Globby! Our day has finally come." The Princess giggled as she hugged Globgor.
"I've wanted this ever since that night I fell in love with you." Globgor cheered.
"I hope you don't mind sharing me with another, though." Eclipsa smiled as she sat on his arm.
"Of course not, as long as he treats you right, I don't mind sharing." Globgor grinned as he was excited for his wedding day.
"Now, I need to get ready. The next time you see me, Beloved, I'll be in a wedding dress, waiting for you at the altar." The Princess bid as they both waved farewells.
For the next time they meet, they would be man and wife.