When Butler takes the lift to the tallest building and brings back Takeru before he doing something bad and we had a walkie talkie to heard Kai and Butler at the same time.
Butler: okay guy we are ready for us
Yui: yes we are ready and make sure you don't push him down on the ground full of car
Butler: I promise I'm going in
While Butler is walking towards Kai and suddenly, Kai has a gun holding on his right hand and pointed at Butler and he doesn't have a weapon for him to fight his President.
Butler: sir please don't do this and I don't want to fight
Kai: why you scared!
Butler press number 2 for Seira-chan to say something to her brother and went Kai is waiting for Butler and out of a sudden, Kai heard Seira-chan voice and suddenly he drops his gun down on the floor and Butler pick it up and put it in his pocket.
Seira: Onii-chan please come back to me and everyone is worried
Butler: yes sir please walk very slowly and come to me
Out of a sudden, went Kai want to walk toward Butler and suddenly, he felt something had pain inside at his body while Kai collapse on the ground and close his eye and Butler rushing toward him shake his body but he has a weak pulse and he is not breath very well.
Butler: everyone please come up now we had an emergency
Seira: what happened up there?
Butler: I can't explain but you need to see for yourself
After an hour later the Sakurazaka46 & Seira came and see that Kai is lying on the ground.
Yui: Butler are you hurt or okay?
Butler: yes I'm fine but we need a doctor fast
Morita: why we need a doctor did something happen to Kai?
Butler: I don't know but I think he had a heart failure
Tamura: meaning is what?
Butler: is mean that he needs a doctor to check on him if not he will dead you don't bring him to the hospital
Matsuda: so what are you waiting for?
When Butler carry him and we went to the lift while all of us is at inside the lift Seira-chan holding her Onii-chan hand and finally we arrived at the 1st floor and take a car and drive straight to the hospital is closed by the weekends and we need someone to check on Kai condition really quick.
Yui: the hospital is close but can someone help Kai?
Butler: I know someone and he is visiting Kai at his mansion and we all going to Kai house for a night and don't worry we have more room for are were guest
Yui: who is they?
Kai POV.
Someone holding my hand went I was unconscious but I think it was Seira-chan who is holding my hand but she holds too tight and my vision is too blur but I can hear someone is talking about me.
Butler and Sakurazaka46 members same as Seira-chan follow him at Kai huge mansion while Tamura saw he had a lot of cars and a motorbike park at the entrance near to the gate.
Tamura: he has a lot of supercars did he buy all of the cars by himself
Butler: no some of the cars is the company
Matsuda: no wonder he rich same with Seki Yumiko and Sugai Yuka, right?
Morita: they are not with us remember, Matsuda?
Matsuda: oh right sorry I forget that they have something going on
Butler: guy, please stop fighting and let go inside
Everyone gets inside the mansion living room and saw a huge picture is at the wall and Butler put it on the sofa and someone is walking toward him and Butler ask what happened to him exactly.
Butler: he had heart failure can you help him
The guy uses superman power to scan his heart and see if there is a problem with heart failure.
Butler: well he is okay?
Kris: I can help him but I need something to hold his hand while I'm doing this to him
Butler: right Moriya can you hold Kai hand while Kris is surgery him
Moriya: sure I would love to and can Seira-chan also hold her brother hand as well
Butler: no problem both of you can also hold his hand and what you don't let go of no matter what okay
They agree with Butler and Kris do some surgery on his heart with a future tablet but it is also the same with every hospital using.
Kris: Okay are you guys are ready for this and I do this he can feel it too
Moriya: you mean Kai can feel the pain as well
Kris: yes! get ready
When Kris use the future tech and Kai body is shaking on the sofa and Moriya with Seira-chan holding his hand very tightly and they didn't let go of it.
Kris: Okay now you may let go of his hand now
While both of them let go of Kai's hand and suddenly he wake up and saw that Seia-chan and Rena are here with him by his side.
Seira: Onii-chan you okay?
Rena: you sure you okay?
Kris: President are you feeling okay and why did you say nothing
While Kai wants to say something to Butler and he takes a notebook and a pen to write o the piece of paper.
Butler: oh my gosh! President is...
Rena: what happened to him? Butler?
Seira: Butler-san? Is Onii-chan going to be okay or not?
Butler: he had lost his voice and he can't talk
Kris: Kai you stay I will find your voice in no time okay
Kai just nods at Kris and he starts to write in his notebook saying that ''you can do this'' and Kris put his thumb up on Kai.
Seira: don't worry Onii-chan we make sure we will help you find your voice just be patient
Rena: yea what Hayakawa say is right
Meanwhile, Kai and Sakurazaka46 members going back into their dorm and went they were walking other came and hug Kai and Kobayashi look at Kai but he is different but his hair and hand tattoo is still there but went member hug him and he did saying back toward them by the smile on his face.
Kobayashi Yui POV.
What did happened to Kai's voice and why did he say anything like ''I'm fine or I'm good'' to other members as well and I need to know what is going on here and why they didn't say anything about Kai lost his voice from saving Rena life.