Once Twins idol had live in Tokyo dome and they have someone who are going to see them live in Tokyo dome which is the Sakamichi group idol member and it was Nogizaka46 with Hinatazaka46 idol member who are going to see each of them live and she was liking the Twins idol so much.
Nagi: come on Kaki let go we are going to be late if you don't go to see the Twin's idol performance
Kaki: okay...okay I'm coming just wait for me will you Nagi
Nagi: okay and are you sure they are performing at the Tokyo dome
Later the same Hinatazaka46 idol members are going to see them as well and it was Yamaguchi Haruyo with Kanemura Miku who had to see them in person because they are super fans of Haruki.
Kanemura: Haruyo let go and meet him or maybe you ask him to autograph
Haruyo: yea I should do that but what he didn't like it
Kanemura: they are a famous boy group in Japan and they will sign for you
Back backstage at the Tokyo dome, there have Karuki and Haruki are getting ready for some kind of light performance for them to sing along with the people who are seeing them in the long of people who are coming to see them sing and dance as well.
Haruki: are you ready, Karuki?
Karuki: of course nii-chan
Haruki: okay let go and get some people to sing along with us
Both of them agree with each other and they are hit on the stage with everyone ready to sing their song same as the Hinatazaka46 and Nogizaka46 who are in the VIP room same member who is cheering them up.
Nagi: Kaki...who is your favourite of each of them?
Kaki: I think I like Karuki
Nagi: same me too Kaki
Later Kanemura and Haruyo are going backstage to meet them in person while they are performing the song after that, they finish the song later Kaki and Nagi had a great time with her favourite idol on someone who drives him.
Kanemura: wait...Haruyo I could see him coming this way
Haruyo: wait...it that Haruki is coming right on your way Miku
Kanemura: wait...what should I do now Paru
One of the Haruki and Karuki managers greets another idol to them and they are seeing the Sakamichi group for the first time in their life.
Kanemura: hi I am a super fan of your work Haruki
Haruki: thanks so much but you want to take some pictures together with my brother
Kanemura: sure we could like to right, Haruyo?
The twin's idol manager has taken a picture of both of them and they autographed the picture that he took and she was liking them and they are leaving the Tokyo dome and go and show off the picture that she took with the famous idol in a boy group.
Haruki: nii-chan...can I talk to you inside the dressing room, please
Karuki: sure of course nii-san
Haruki: please come inside with me and have a talk
Without any sound coming from Haruki and he was sitting down at the chair while he was facing him with so damn serious face on his.
Karuki: nii-san what did you want to talk
Haruki: I found something about that girl earlier went you take some pictures
Karuki: wait...you mean Haruyo right?
Yamaguchi Haruki nodded at Karuki Leo and there has some connection with her while we are still in high school went he had missed and he find out that Karuki is his lost twin brother who had separated from Haruki's family.
Haruki: I think Haruyo is my sister and your sister which is from Nogizaka46
Karuki: who is my sister then, nii-san?
Haruki: your sister is Kuromi Haruka from 4th gen member
When they had to go back from the Tokyo dome and the manager had something for them to meet the Sakamichi group one by one of the group idol members to greet him in person.
Kaki: Nagi...did some of them feel so damn cool right
Nagi: yea I think so but he can be calm while Kuromi Haruka found out about his living with his twin brother
Kuromi: wait...did you see my brother from somewhere else did you not?
Inoue Nagi had shown Kuromi Haruka a video of them who are on the stage while they were singing and dancing on the stage in the Tokyo dome.
Kuromi: wait...is that Karuki Leo?
Kaki: I'm sorry Kuromi he was still alive from missing over the years but he found his lost twin brother
Kuromi: can we have some interviews together with them
Once the twin's idols had come to the Sakamichi group building there have every of 46 idols who are there to see the famous idol group of boy bands and they are twins' idols who had rocked the stage at the Tokyo dome.
Kanemura: oh my god...Paru come here and see who had come here to the Sakamichi building
Haruyo: oh my gosh you are right they are here for something important
Haruki: can I see Yamaguchi Haruyo?
Later Yamaguchi Haruyo had to take him to the meeting room alongside the Hinatazaka46 idol member and they were talking to him with some twisted question.
Karuki: have fun nii-san and while I go and see someone else well
Haruki: sure see you later nii-chan
Haruyo: please go inside the meeting room and we can have some talk with each other and get to know you better
When the Hinatazaka member are taking Haruki inside the meeting room alone with him and meanwhile, Karuki had to see Kuromi Haruka at the Nogizaka studio and she can see that her brother who was here to see her for the first time of that went missing the past years later.
Karuki: hey...Kuromi how are you feeling seeing me here at the Nogizaka studio?
Kuromi: nii-san I miss you so much can I have a hug
Karuki: sure of course you can Kuromi
Out of the blue, Kuromi Haruka with her brother Karuki Leo hugged each other and back inside the meeting room at the Hinatazaka studio, we have Kanemura Miku with Yamaguchi Haruyo who was with Yamaguchi Haruki.
Haruki: Haruyo...you are my sister that you have been looking for
Kanemura: Paru your brother are here to pick you up and he is worried about you
Haruyo: you are my brother and Karuki is your lost twin brother you were saying
Haruki stood up and he goes toward Haruyo and he was hugging her while she hugged her back at her brother who are here for some time to think about what just happened between them in the past self.