After Zahhak was done with the two women he used his powers to spy on the knight who will be pulling the sword. He had a male cleric from the Church with him alongside a female mage. Zahhak checked out the mage as he smirked.
"Alright, time to add something else to the sword as well." Zahhak said with a smile.
He then disappeared from the castle and appeared at the cave where the sword is. He then used his powers to add some more functions to the sword. After he was done he had a satisfied smile on his face as he turned himself invisible. He waited for the group to come as he smirked as he saw them.
"That's the demonic sword." The knight who would be taking the sword, Leon, said as he looked at the sword.
He has brown hair, fair skin and blue eyes and is wearing knightly armor. He has a sword sheathed on his left hand side.
"Yes, there's no doubt about it. That's the sword." The cleric, Gilbert, said as he looked at the demonic sword cautiously.
He has blonde hair, fair skin and blue eyes and is wearing an armor which is a mix between a cleric and knight. He has a club in his right hand.
"I'll place the spells to strengthen you Leon." The mage, Aria, said to him as she started to use her magic.
Aria has dirty blonde hair and green eyes and fair skin. She is wearing a mages clothes and a staff in her hands.
"Thanks Aria." Leon said as the spell took effect.
The sword shone and was surrounded by demonic energy before a demon manifested from the energy. The demon is a quite big and of hulking mass and red scaly skin and has two large horns on its head. Leon got ready with his sword alongside the other two as the demon roared at them.
After that a fight ensued between the four of them as Zahhak watched the battle with a smile as he keenly looked at them to see how they fought with eachother. The manifested demon was good at fighting and gave the group trouble and managed to damage them as Zahhak watched the fight as if he was watching a show as he waited for the conclusion.
Soon Leon had managed to defeat the manifested demon as he kneeled on the ground exhausted and with a large gash on his chest. Gilbert looked at the knight with a face of worry alongside Aria. But the man then sighed as he knew what he had to do.
'Now the real fun is about to start.' Zahhak thought to himself with a smirk.
"Finally defeated it. Now I can... get the sword." Leon said as he slowly stood up and placed a hand on his wound and walked to the sword.
He reached the sword which had lost its aura and grabbed its hilt and pulled it out of the ground. He has a satisfied look on his face. But then it turned to surprise when the sword lit up with demonic energy which then engulfed him.
"AAAAHHHH!" Leon screamed when he felt the demonic energy on him.
"Leon!" Aria shouted in worry as Gilbert gripped his club.
'Now's my chance.' Zahhak thought to himself as he turned into a ball of energy while still invisible and went into Leon's body as the knight let go of the sword.
Aria and Gilbert watched as his armor fell from his body and his body started to change. His skin turned a purple colour and his hair as well as his pupils became a yellow colour. His body also started to change as well as it started to become more feminine.
"What's happening? What do we do?" Aria said shocked as she saw her friend and crush in such a state.
"Damnit!" Gilbert shouted as he made a whip of holy energy and wrapped it around Leon who is shocked at it.
"Gilbert! Is this a spell to save me?! Then please do it fast!" Leon said as he felt his body changing more as she looked at the man with a look of desperation.
"I'm sorry. I should've killed you right after you defeated the manifestation." Gilbert said as his whip glowed.
"What?" Aria said shocked at his words.
"Wh-What do you mean?" Leon asked him shocked.
"The sword bonds with whoever has defeated the manifestation and the Church had ordered me to kill you when you did." Gilbert said to him.
"You, knew about this? And you agree to it!" Leon asked before shouting at him.
"It's the only way that we can secure the sword. Don't worry Leon, you will find peace in our Lords land." Gilbert said to him.
Leon looked at him with wide eyes before she chuckled and then started to cackle as the two humans looked. Then Leon laughed out loud as the demonic energy started to come out of his body in waves.
"You knew! Ahaha! You knew! And you decided to sacrifice me! You traitor!" Leon shouted in anger as she laughed.
"No!" Gilbert shouted as he charged towards Leon with his club ready to strike him.
But Leon just smirked as the demonic sword came to her hand and she blocked the club using it shocking Gilbert.
Then he was thrown back as a large wave of demonic energy came out of Leon's body as it sent the two humans skidding back as they kneeled on the ground.
"I will admit, while I first disliked this..." Leon said as the energy started to dissipate from her body.
The two humans raised their heads and we're shocked to see Leon completely change into a woman with a demonic appearance. She is dressed in dark royal like clothing which was also erotic so to speak. She also has horns on the sides of her head. (A/N: I'll put the image in the comments here.)
"... I love this." Leon said in a sultry tone as she brought the blade of the demonic sword to her lips and ran her tongue over it as she looked at the two humans.
"Leon?" Aria called out scared at his words.
Then an familiar ball of energy came out of Leon's chest as she followed it alongside the two humans. The ball of energy then formed into Zahhak who has a smirk on his face as he looked at the two humans.
"A demon!?" Gilbert said shocked while Aria is speechless as well.
"So, do you like your new form?" Zahhak asked as he turned to Leon.
"Yes~, it's very good my Lord~." Leon said with a sultry look and a blush on her cheeks as she pressed her body onto Zahhak's as the man smirked.
"Leon? What do you mean?" Aria asked scared at hearing him.
"Why don't you show them?" Zahhak asked Leon who smirked at his words.
"As you wish Master." Leon said before she kissed him on his lips.
Gilbert and Aria were shocked when they saw it as Zahhak kissed back as their tongues intertwined. Leon pressed her entire body onto Zahhak's as he kept on kissing her. Leon's pussy started to drip her juices as she hugged him and kissed him back hungrily as the two humans watched with shocked faces.
They stopped kissing as Leon panted with a red blush on her face as she looked at Zahhak with desire. Zahhak just smirked at the smile that she has on his face.
'My plan worked perfectly.' Zahhak thought to himself in satisfaction as he looked at his new conquest.