Serena's POV:
I was looking outside from the window of the train, I was getting really boring and quiet here too. Wait a minute. It's too quiet here in the train. When I looked around the train. I saw Kyojuro, Tanjiro, Zenitsu & Inosuke were asleep. Even, the people were asleep too.

"What the... What's going on here? Somethings not right here but... what?" I said to myself as I was prepared to check on the people until Kyojuro put his arms around me and bring me closer to him too. "What the?! Kyojuro! Let go of me! Even, wake up too!" I said as he was still asleep. Yep, there's somethings wrong here.

"I have no choice to do this..." I said as I pulled Tanjiro until I put him in my place as Kyojuro is now hugging him instead. "Okay! I need to find out, what's going on here" I said as I looked around the train for something strange. I was still looking around even, trying to wake up some of the people until Nezuko came out of her box as she saw Tanjiro was asleep.

"Nezuko. I tried to wake him up but, for some reason. Something keeping him asleep" I said as Nezuko was trying to wake Tanjiro up but, he didn't wake up still. Then I saw Nezuko came closer Tanjiro as I was confuse of, what she's doing. "Um... Nezuko? What are you d-" Before I can say something to her until Nezuko head-butts her brother, Tanjiro. When I looked at her face, I saw blood coming from her forehead as tears started to form in her eyes too.

"Nezuko... I think, it was a bad idea for doing that.." I said as Nezuko looked at me until her eyes change.

"Nezuko? What's the matter?" I asked Nezuko as she started to growl for some reason until I realised, there's something wrong here. Then I saw Nezuko was looking at the door, she must have found it. So, that means... It must be outside of the train.

"Nezuko. I need you to protect Tanjiro and the others from danger. Even, the people on the train. Can you try to wake Tanjiro up too? I know you can do it, Nezuko" I said as she nodded at me for understanding. "Good. I'll leave everything to you, Nezuko. Good luck" I said as I went to the slide door until I was outside of the train. I started to climb on the ladder until I was on top of the train.

"Never try this at home kids for your own safety because this is dangerous" I said to myself until I saw a demon standing there. Then he turned around and, I saw a number on his left eyes, just like Rui back at Mt. Natagumo.

"Oh my, oh my. The Neo Queen Serenity has came. Even, she's all alone too. No one can save you in time" he said as I pulled out my nichirin blade even, I pointed my sword at him too. "So, your the one, who put everyone to sleep! I knew, there's something wrong here! Your one of the Twelve Kizuki!" I asked as I was glaring at him.

"Oh? So, you know about us? Your a smart girl or should I say... princess or queen" he said as I was really scared of him. "Stop going off the subject! Who are you?! And, what are you doing to my friends too?!" I said as I was on guard. I don't know, what he's capable so I need to be careful around him until my friends can come and help me.

"Very well, then. I'll tell you my name. It be really rude of me" he said as I was still looking at him. "My name is Enmu, princess/queen. And, I'm also a lower moon 1 too" he said as I decided to ask him a question because I need to know, what's he doing here even, what dose he want too.

"I want to ask you a question! You better answer my questions!" I said as Enmu gives a creepy chuckle. "First question! What are you doing to the people on the train even, my friends too?!" I asked him as I had a tight grip on my sword.

"I'm killing them in their dream. Dying while sleep is like a blessing, it just amazing as I enjoy them screaming in agony and they begging to make it stop from their suffering too" Enmu said as I was shocked of him. He was a true monster. "Here my last question... Who are you here for? There someone you need to get rid of..." I said to him.

"I need to kill a demon slayer boy, who wears hanafuda earrings for that man" Enmu said as I realised, he was here for Tanjiro to end his life. "So... you send by that man. Is there any chance his name is... Muzan Kibutsuji" I said as Enmu was surprise of me.

"How did you know that man's name? You didn't came across him even, he didn't meet you too... It doesn't matter. When I'm done killing the boy, Hashira and the other demon slayers. I'm going to bring you to that man. I'll get even more blood from him for this" Enmu said as I was prepared to fight until I heard someone behind me.

"Serena!!!" When turned around, it was Tanjiro and he's okay too. Somehow he wake up from the dream, I think Nezuko did it. "Tanjiro! This demon is the cause of this! He's here to kill you and the others too! Muzan Kibutsuji send this demon here!" I said as Tanjiro nodded at me. I was going to help him fight the lower moon 1 demon until Tanjiro stops me for a second.

"Serena. I need you to be with Nezuko to protect everyone on the train" Tanjiro said as I was shocked of him. "Tanjiro! You can't be serious! Your going to get killed by him!" I said as I was really worried for him. Tanjiro was trying to keep me safe.

"Serena! I'm serious of this! I heard, what he said! And, I'm not letting Muzan Kibutsuji get you too! So, please! Just do, what I said!" Tanjiro said as he was really serious of this. Even, so many people will die Enmu too. I have no choice, then. "Okay... But, don't die Tanjiro! If you die! I will never forgive you, what you did!" And with that, I went back to where Kyojuro, Zenitsu, Inosuke & Nezuko are.