{Note :- Mild Trigger warning for pain and violence. I will mark it with A/N at the start and end.}

Wei Ying removes the band from around his wrist. And starts playing an aggressive tune.

The tension in the air is palpable.
Lan Zhan walks a reasonable distance  away from Wei Ying.

A few seconds pass by and Wei Ying stops playing. The flute falls to the floor at the same time Wei Ying's eyes roll back into his head.

Lan Zhan holds his breath... he has already thought about this scenario in his head many times. He knows how possession works.

He gives Wei Ying a few seconds more.

Slowly Wei Ying's eyes become normal... Wei Ying  looks around the room curiously.

His eyes fall on the man in white robes.
The younger man smiles....it's a smile Lan Zhan has never seen before... It looks unfamiliar.. somehow.

Lan Zhan summons the Killer thread to bind the stranger who looks like Wei Ying but the younger man raises his hand to stop the Light bearer.

Lan Zhan stops.

The younger man takes a few steps towards Lan Zhan but the older man stands his ground.

Their eyes meet.
'Wei Ying?' Lan Zhan thinks taking a few steps towards his husband.

The smile... it's kind... It's Wei Ying.
'Maybe my eyes were playing tricks on me a moment ago... Maybe I didn't read them right...the light in the room is not good afterall.' the Light Bearer thinks looking into the familiar eyes.

The Light Bearer is convinced that it's Wei Ying... It had to be... If it were the demon it would have attacked. Maybe the demon did not take the bait.

The younger man walks closer still and his hand reaches out to touch Lan Zhan's brow.
"Beautiful." Wei Ying says in a soft voice and his hand caresses Lan Zhan's cheek.
"Wei Ying?" Lan Zhan asks hesitantly.

"Mn." Wei Ying licks his lips .
"What happened? Did it not work?" Lan Zhan asks... still unsure of what had happened.

The younger man keeps smiling and his fingers trace Lan Zhan's lips.

Lan Zhan gulps as Wei Ying starts pulling him towards the bed...
Lan Zhan looks at the younger man's eyes again.
'Lust... Want...passion.' Lan Zhan thinks while being pulled.

Wei Ying makes Lan Zhan sit on the bed, gently brings their bodies closer and starts placing feather light kiss on Lan Zhan's cheek moving slowly to his jaw.

'This is Wei Ying... Only he can be so gentle.' Lan Zhan thinks placing his hand on the nape of Wei Ying's neck.

Wei Ying leans into the touch.
Wei Ying gently pushes Lan Zhan into the bed and continues placing kisses on his neck.

Wei Ying looms over Lan Zhan staring at him. He yanks at Lan Zhan's collar and Lan Zhan winces.

"Wei Ying.. what's wrong?" Lan Zhan asks his brows creasing.

Wei Ying doesn't answer instead he settles on top of Lan Zhan and his lips latch on to nape of Lan Zhan's neck... sucking and biting.

"Wei Ying.. stop... we decided... later.. not now.. Wei..Ah!" Lan Zhan says in a breathless broken voice and winces again when Wei Ying pulls at the collar.

"Wei Ying... " Lan Zhan starts to plead again when Fairy barks loudly.

'What is Fairy doing here?' Lan Zhan wonders.

Wei Ying doesn't get frazzled at all.
Fairy barks again.

"What fuck is wrong with you. Where is Jin Ling? Go play with him and stop bothering me."
Lan Zhan hears Jiang Cheng scold the dog.

He looks at Wei Ying carefully.
This is the first time Wei Ying had not reacted to the presence of Fairy...Wei Ying had not even looked at where the bark was coming from.

Warning bells go off in Lan Zhan's mind as he tries to push Wei Ying off of him.

The younger man doesn't bulge.
He just looks at Lan Zhan... There it is... that unfamiliar smile again... It's Mocking the Light Bearer.

Lan Zhan pushes with all his might and reverses their positions.
"Who are you?" Lan Zhan shouts. He is furious.

{A/N for pain/violence}

Wei Ying smiles and his hands land on Lan Zhan's neck strangelling him.
Lan Zhan is physically stronger. He hold Wei Ying's wrists and pries the younger man's hands away from his neck.

Wei Ying tries to grab his neck again but Lan Zhan is fast. He pushes Wei Ying with force and immediately sets the killer string on him... careful just to bind him.

"Demon...if you want to be set free answer me." Lan Zhan orders.

Wei Ying smiles sweetly.

"Why did you come here?" Lan Zhan questions it.

Wei Ying keeps smiling.

"Answer me or I will have to hurt you." Lan Zhan warns.

Wei Ying keeps smiling.
'Maybe it doesn't know why it came here.' Lan Zhan thinks and proceeds to the next question.

"When did you come here?"

Wei Ying's eyes roll back into his head again. After a few seconds Wei Ying's eyes become normal again. But there is no smile on the face. Beads of sweat appear on Wei Ying's forehead.

A pained broken voice comes from Wei Ying's lips.. "Lan Zhan... get... it out.. the band.. use.. it."

Lan Zhan knows this voice. It's his Wei Ying.

Lan Zhan immediately takes out the band and ties it around Wei Ying's wrist.

Nothing happens.

"Wei Ying... Wei Ying." Lan Zhan shakes the younger man's shoulder and calls his name panicking.

"Lan.. Zhan...it... hurts.. " Wei Ying says with effort and adds, "Can't... control... "
"Wei Ying, what can't you control... please tell me." Lan Zhan asks desperately still holding the younger man's shoulders.

Wei Ying pushes against the Killer thread and falls to the floor writhing in pain. His body begins to twist and turn.

"Lan Zhan... help me!" Wei Ying shouts and pushes harder against the killer thread.

Lan Zhan panicks and calls the killer thread back..he is scared that they might hurt Wei Ying.

Wei Ying's body stills for a second before he attacks Lan Zhan again.

His hands on Lan Zhan's neck are stronger now.
Lan Zhan holds Wei Ying's wrist again, trying to remove it...but he fails.

Lan Zhan tries to get a few words out, "Wei Ying... focus.."
Wei Ying's eyes have tears freely falling and rolling down his cheeks.
"Lan Zhan... I can't stop it...hit me with your... " Wei Ying starts but his eyes roll back into his head again and when they are back to normal there is sinister smile playing on Wei Ying's lips again.

The grip on Lan Zhan's neck tightens.
Lan Zhan tries to push Wei Ying again but he doesn't bulge.
Lan Zhan knows he is about to lose consciousness any moment now. He shouts with as much power as he can muster, "Wei Ying! Focus." It's loud.. loud enough for Jiang Cheng to hear.

'That was Wangji... Why did he shout like that?' Jiang Cheng thinks and curiosity gets the best of him and he breaks open the door and enters.

His eyes fall on Wei Ying who is on top of Lan Wangji.
Jiang Cheng turns away. 'Fuck... was it just Wangji ...being excited!? Did I walk in on them doing... doing 'that' again!!???'

"Wei Ying... focus." Lan Zhan begs.. his voice is barely audible but Jiang Cheng turns to look again.
He goes closer. Now he can see the whole picture.

He can see Wei Wuxian strangling Lan Wangji. 'What the fuck?'

Jiang Cheng runs towards them and starts trying to pull Wei Ying off of Lan Zhan.
"Wei Wuxian!  Stop it. Let go of Hanguang Jun." He screams right in Wei Ying's ears.

Without looking away from Lan Zhan, Wei Ying grabs Jiang Cheng's throat with one hand and pushes him away.

Jiang Cheng falls a few feet away.

Lan Zhan's eyes widened. The last time the demon had left him as soon as he had touched the headband.. but it was not having any effect now.
Lan Zhan observed that Wei Ying, who was physically weaker than him was dominating him... Wei Ying had said nothing about the demon making one stronger.

Jiang Cheng sits up and puts his hand on his throat. 'How can a man without his core be so strong?'

Wei Ying's grip on Lan Zhan's throat loosens a bit and Lan Zhan successfully removes himself from Wei Ying's grasp.

Wei Ying's eyes roll back into his head for a second before becoming normal. There are tears in his eyes again.
"Lan Zhan.. use the killer string... Please....I can't be allowed to hurt you... Please Lan Zhan!" Wei Ying says holding his chest. He looks like he is in a lot of pain.

Lan Zhan's heart breaks at the pain Wei Ying must be going through but he binds Wei Ying with the killer thread again.

As soon as Wei Ying is bound by the thread he starts to push against it... trying to break it.
Tears make their way down his cheek and he clutches his heart wincing in pain.

Jiang Cheng finally gets what is happening.

"Lan Wangji, you said it was simple. What happened?" Jiang Cheng asks in a concerned tone walking towards Lan Zhan and shaking his shoulder.

Lan Zhan's face has lost it's color.
"I don't know... It's useless... I am useless... He is in pain... He is in pain." Lan Zhan murmurs as tears roll down his eyes.

Wei Ying looks at the men and begs, "Kill me.. Please... Kill me now. I can't control....I shouldn't... I don't want to hurt you... Lan Zhan.. Jiang Cheng... Kill me...It hurts too much."

Wei Ying falls to the floor and his body starts to twist and turn.

{A/N}

Lan Zhan panicks and removes the killer string from around Wei Ying and tries to go to him.

Jiang Cheng stops Lan Zhan before he reaches Wei Ying and stands in front of him. Drawing energy from his core he pushes Lan Wangji who is thrown off and falls a few feet away.

"Sorry... Hanguang Jun." Jiang Cheng mutters and turns to Wei Ying.

"No.... Stop!" Lan Zhan shouts trying to sit up when sees the Purple Lightning spark in Jiang Cheng's hand.
Lan Wangji knows what's going to happen next he begs, "Don't do it Jiang Wanyin!"

{Note :- *Sings in terrible voice* 🎶Hello cliffhanger my old friend... I am here to visit you again.🎶

As a compensation for the painful update here is a sexy Xiao Zhan trying  and succeeding in making me jealous of a chair.

And here is a very angelic looking Lan Zhan *omg his lips*

Jokes aside, this is one of the darkest chapters in the story.
Sorry for the pain.
I hope I don't get hate for this.
It had to be done. *cries in WangXian*

If you felt something in your heart or it has moved you in some way, please share.

Votes and comments keep me motivated and help me write better.

Thank you for reading.

Have a nice day.}