Serena's POV:
When I came into the room, where Tanjiro, Zenitsu & Inosuke until I saw a new person with them. Even, she looks so pretty and cute too.

"Oh! Serena! You're done talking to Hisa. I should introduce you to her. Serena, this is my little sister, Nezuko. And, Nezuko. This is our new friend, Serena" Tanjiro said as Nezuko came up to me even, she gave me a hug too.

"It's nice to meet you, Nezuko. Even, you're very pretty too" I said as I hug her back even, I was smiling too. "We should get ready for our next mission, right now" Tanjiro said as we all nodded at him. When we are ready to go until Hisa came up to Tanjiro as she was telling him something.

Tanjiro's POV:
We were prepared to go until Hisa came up to me as she wants to tell me something.

"Tanjiro. Make sure to take her with you, guys. Serena is very special girl and, make sure you three protect her from the demons too. You will know the truth, when she is ready" Hisa said as she went back inside & close the door too.

"Are you sure, it's a good idea? Serena is not a demon slayer even, I don't know if she has a breathing technique too..." Zenitsu said as he was worried for her safety.

"I think, it's best we should. Hisa can't keep her here in the Wisteria family crest for some reason" I said as we all started walk to our next mission.

/Time Skip/

Serena's POV:
We made it to our destination as I was looking at the mountain known as Mt. Natagumo, it was bigger I expected.

"Hold up! Would you mind waiting a second?" Zenitsu screeches as we all looked at him. "Zenitsu? What's wrong?" "I'm scared, all right?!! Now that we're nearing our destination, I'm so scared!" Zenitsu said as he was cries in fear.

"Why the hell is he sitting? How creepy is that?" Inosuke said as he was looking at Zenitsu. "Who are you talk, Pig Face?! Don't tell me you're not getting any vibes from that mountain?!!" Zenitsu said as he was pointed at the mountain. Zenitsu was not wrong about that, it's giving me a creepy vibes too.

"Zenitsu is right... The mountain is giving a creepy vibes, guys" I said as Zenitsu was really happy of, he's not the only one. "See! My future wife having the same feeling too!" Zenitsu said as Tanjiro & Inosuke were still looking at the mountain. Then my head started to hurt as I put both of my hands on my head.

"Serena? Are you okay?" Tanjiro asked as he starting to get worried. "What the hell is the matter with her? If you're going to cry?" Inosuke asked in a rude tone as Zenitsu came next to me. Then I started to see a boy, who's a demon slayer. Even, there's a invisible threads on his back until I was back to the reality.

"Serena-chan?! What's wrong with you?!! Why didn't you answer, Tanjiro?!!" Zenitsu asked as he was scared for my safety. Then I started to run towards Mt. Natagumo as Tanjiro, Zenitsu & Inosuke followed behind me. When we came closer to Mt. Natagumo, I saw the boy from my vision. The poor demon slayer, who looked up at us with wide eyes in fear even, tears threatening to spill too.

"H-Help me" he said in fear as I feel something trigger inside of me. I run so fast as Tanjiro, Zenitsu & Inosuke were shocked & amazing of my speed. When I got closer to the boy, I quickly pulled my nichirin sword as I slash the threads.

"Sir? Are you okay?! You should get out of here! Me & the others can take care of this" I said as he nodded at me until he quickly leaves. I realised, what I did to save the demon slayer from his doomed. Then Tanjiro, Zenitsu & Inosuke came to me as I looked at them.

"Serena! What happen?! Why did you swing your sword behind his back?" Tanjiro asked as I was prepared to say something until I feel something on my arm. When I looked at my arm, I saw spiders on my arm. I was prepared to scream until I was pulled into the air, like I was flying as the threads were pulling me.

"Serena!!!" Tanjiro, Zenitsu & Inosuke said my name as they were in fear. "Guys! Help me! I don't want to die!!!" I said to them until I was far away even, I was still getting pulled by the threads.