Serena's POV:
I was watching Tanjiro, Zenitsu & Inosuke training still as I was sitting down on the wooden floor. They were really determine to protect the people from the demons.

"Wow... they are really training really hard..." I said as I was still watching them until felt pain in my head again. This cause Tanjiro, Zenitsu & Inosuke to get their attention on me as they came up to me. "Serena? Are you okay?" Tanjiro asked as he was worried.

"Serena-chan?! What's the matter?! I don't want to lose my future wife!!!" Zenitsu said as he panic & crying for me. "What the hell is wrong with her? She's being a weakling" Inosuke said as Zenitsu started to argue & fight with him too. I started to see a vision of the Hashirsa and my friends.

https://youtu.be/1Fkie4OTBhg

I was back to the reality as tears started to form in my eyes of, what I witness from my vision. Then I realised Tanjiro, Zenitsu & Inosuke were still looking at me as they got really worried for me.

"Serena?! What happen?! Why are you crying too?!" Tanjiro asked as he was worried and scared too. "It's nothing, Tanjiro... I need to be alone..Just tell, Shinobu... I went to have a walk" I said as I start to leave the butterfly estate even, walk away too.

/Time Skip/

I was still walk under the warm sun as it was shining bright too. Then I saw a bench so I set down until I begin to cry again in sadness & pain in my heart too.

"Kanae... please help me. I saw, what going to happen to the Hashiras even, your sister too... give me a sign or something..." I said as I wipe away my tears. I looked up at the sky as it was beautiful today too. I then begin to sing as I close my eyes.

https://youtu.be/5vulA5vJH5Q

When I finished singing, I then heard someone behind me. When I turned around to the person and, it was Kyojuro Rengoku as he was smiling in amazement of me.

"You have a really beautiful voice, Serena! I didn't know you can sing!" Kyojuro said as he set next to me even, he was still smiling too. I then looked down on the ground as he's expression became concerned of me now.

"Is there something wrong, Serena? You look really sad" Kyojuro asked as I looked at him. "It's... nothing. I don't know, what I'm doing anymore... I can't help a friend, who wants me to protect their love ones... I'm just a weak girl.." I said as I looked away from him until Kyojuro put his both hands on my shoulder even, making me look at him too.

"Don't say that, Serena! You are strong! Even, you just saved the demon slayer boy named, Tanjiro! And, his little sister too! Also, the strong people can protect the weak people too! Don't forget that, Serena!" Kyojuro said as my eyes were widen in shock of him. He's right. I can save everyone in time from their deaths even, I just saved Tanjiro & Nezuko too.

"Thank you, Kyojuro. For making me realised, I can still protect the people. Your really amazing person, Kyojuro" I said as I gave him a warm smile until I saw him turning red even, he was smiling nervously too.

"I need to go to my next mission, Serena! I'll see you later!!!" Kyojuro said as he quickly leave for his next mission. Wait a minute. His next mission is... the train! "Oh no! This means his going to die after the train!" I said as I quickly stand up from the bench and I run back to the butterfly estate.

"I hope, I can save Kyojuro in time from his death" I said to myself as I was still running back to the butterfly estate until I made it and, I saw Tanjiro & the other two were ready to go on their next mission. "Hey, Serena! Your here in time. I got your sword because we got our next mission" Tanjiro said as I nodded at him. We started to leave the butterfly estate as we were on the way to our next mission.

Kyojuro's POV:
I did not expect this coming even, I became nervously too. There's something special about Serena and, I can't figure it out too. I then looked up at the sky as I can't stop thinking of her. Even... she had a beautiful smile.

"I think she make a perfect wife for me" I said as I smiled warmly of this until my little brother, Senjuro came up to me. "Kyojuro? Are you okay? I thought you were going to your next mission" Senjuro said as he came next to me. I just give my little brother a warm smile to him even, I pat his head too.

"I'm just thinking of the girl, Senjuro" I said as he got curious. "Really? What her name?" "Her name is Serena, Senjuro. And, she cured our Master Kagaya so he's not ill anymore" I said as Senjuro was shocked to hear this and, I have a feeling father is listening too.

"Seriously?! Master Kagaya is all better! This means there's hope, then!" Senjuro said as he was really happy of this. Even, I was happy of this too. "I hope, I come across Serena again" I said as Senjuro looked at me in confuse. "Why do you hope, Kyojuro?" "Well see, Senjuro...

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I'm going to make Serena, my bride"