Nobody's POV:
Yushiro was terrified to witness, Serena getting absorb by Muzan as tears fall from his eyes so fast. Tamayo saw Yushiro crying again as she got worried.

"Yushiro! What happen?!" Tamayo asked him as he didn't look at her. "Serena... is gone, Lady Tamayo... I'm sorry" Yushiro said as both Obanai & Mitsuri were shocked & terrified. She begins to cry so hard of this as Obanai was in anger until he broke the silence.

"Send both me & Mitsuri there! We're going to bring Muzan down!" Obanai said as Yushiro nodded at him. Both Obanai & Mitsuri went through the door as the door disappeared. "Yushiro... can you still continue to control the Upper Moon 4..?" Tamayo asked in a worried tone to him.

"I don't know, Lady Tamayo... I will still continue to fight even... avenging Serena too" Yushiro said as he was continued to control Nakime. Meanwhile with Tanjiro & Giyu, they were still fighting Muzan. Tanjiro had Serena's nichirin blade even, he was about to get killed until Obanai saved him in time as Mitsuri was next to him too. Muzan was shocked of this as he got angry. "Nakime! What are you do?! What did you send two more Hashiras here?!" Muzan asked her in angry as Nakime got really confuse.

"But, I killed the two Hashiras... how is that possible..?" Nakime asked as she was really confuse of this. "Muzan Kibutsuji!!!" Five of them hear Yushiro's voice as Muzan was shocked of this.

"You're going to pay for taking the innocent lives from the people! Even, love ones! Also, I'm going to avenge Serena too!!! So, die you monster!!!" Yushiro said as he used his demon blood art to teleport all of the Hashiras there. "Fifth Form: Flame Tiger!!" Kyojuro said as he cuts of the tentacles from Muzan.

"Tanjiro! Giyu! I'm glad you're safe!" Kyojuro said as he came up to them until he saw Tanjiro holding Serena's sword. "You got her sword! That's good! You just need to give it back to Serena so we can finally to defeat him!" Kyojuro said until he saw Tanjiro's sad expression even, tears falls from his eyes too.

"T-Tanjiro... Where's Serena..?" Kyojuro asked as he was not smiling anymore even, his expression became worried too. "You all Hashiras are too late. She's gone now" Muzan said as he was done regenerating from the attack.

"What... did you say..." Kyojuro asked as he slowly turned around to Muzan even, the others were listening to him. "Did you not hear me? I said, she is already gone because I absorb her" Muzan said as he smiled evilly at them. Every demon slayers were in terror as they were trying to hold back their tears even, they were losing hope.

Kyojuro was standing there in horrified as he tried to not to cry too. He never got the chance to tell, Serena. He loved her, when she smiled at him and always hangs out with him until... he took her away now.

Tengen was heartbroken of this, he was looking down on the floor as he was still holding his two swords in his hands. He was never going to forgive, Muzan for what he did. He's going to end him very painful.

Genya thought to himself of, he wasn't strong enough to protect her. He was too late to save Serena from him in time.

Zenitsu was terrified & sad at the same time as he was standing there. He never gets the chance to spend time with her even, get to know her too. Serena was gone forever now.

Inosuke was in pain to hear this from Muzan as he was really angry and, he had a strong hatred towards him now. He was not going to give up until he was gone.

Gyomei felt ashamed to himself of this. He felt really sad of, Serena was absorb by him. The Demon king, who took the innocent lives away and now. He took Serena's life away too.

Muichiro felt really sad as he needed to cry to let his pain out. Serena was special to him even, she understands him, whenever he forgets a lot. Serena will never be with him anymore.

Shinobu covered her mouth in terror as she saw the hair clips on the floor even, they were next to Muzan too. Serena was like a sister to her even, she reminds her of Kanae too.

Kanao begins to cry in sadness as Serena was really gone because of Muzan. Serena was like Kanae, who got killed by Upper Moon 2 until they finally avenger Kanae's death. Now... Serena is gone. She is going to kill him for good.

Sanemi... his expression terrified & tears finally fall from his eyes as he remembered the good memories, when Serena always caring person. And, she always smiles at anyone too. Sanemi's image of Serena slowly fades away as she smiled at him.

"See you later, guys!"

Serena's happy voice slowly fades away until everything was quiet until Sanemi pulls out his nichirin blade out as he screams in anger even, started to attack Muzan too.

"MUZAN!!! YOUR GOING TO PAY FOR TAKING SERENA AWAY!!! I'M GOING TO KILL YOU, MUZAN!!! EVEN, YOU ARE GOING TO FEEL A LOT OF PAIN TOO!!! YOU BITCH!!!"Sanemi said in a hatred tone as he swings his sword at Muzan. This cause a lot of damage for him as Muzan tries to kill Sanemi but Genya blocked the attack as he was using his gun to shoot at Muzan. "First Form: Unknowing Fire!!!" Kyojuro said as he showed hatred towards Muzan even, his eyes showed hatred too.

"You're going to die, Muzan Kibutsuji! For killing the innocent people & taking away their love ones! And, for Serena too!!!" Tengen said as all of them started to attack him even, they were determined to end him too. Meanwhile with Master Kagaya was watching this as tears falling from his eyes too. "Kagaya..? What happen..?" Amane asked in a worried tone to him as their children were with them.

"We... Lost Serena, Amane.." Kagaya said in a upset tone as Amane covered her mouth even, tears fall from her eyes too. Master Kagaya looked up at the sky as he was hugging his wife, Amane. "Serena...
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Why did you do this..?"