Meanwhile inside the room of apartment, there is a young man with blue short curl hair, blue eyes... Yes he is blue boy, most people think he is blue boy because of hair colors and eyes colors.

He wear a lab coat, blue shirt, black jean and blue shoes. He is a scientist, that right, But he is Anime & Tokusatsu Otaku and scientist... He is like George Karizaki from Kamen Rider Revice.

His name is Sam Stein.

He is genius but he is Anime & Tokusatsu Otaku. He is currently watching Kamen Rider Revice episode 8 and he was sigh because he saw Daiji Igarashi become Kamen Rider Evils.

Sam is not shock or surprise because he already knew that. He see George is suspicious and why George give him the TwosideDriver to Daiji or rather Kagero. He is think George must plan something evil.

"Oh well... I think too much, time to get some coffee" Sam say to himself as he sit up from chair and he heading outside the apartment, he will pay the bill later once he find the damn jobs.

Sam is have a parent who is scientist and they care for him, however he live alone because he work alone to research and he know his parent worry about him but he will be fine.

His friend told him that he is similar to George Karizaki. Honestly, Sam think same thing but he not like that man.

Sam was walking on road until he saw little girl is trying to catch soccer ball and Sam smile but he heard truck beeping and he saw it was truck coming to little girl. Making little girl scare and Sam push little girl away.

Sam got hit by a truck. He was on floor and most people scare and shock, they trying to call ambulance and the little girl was scare as Sam smile back at her.

"It's okay... It will be fine..." Those words were last words for little girl before he close his eyes.

At unknown void

Sam was wake up in black void and he felt like it not heaven or hell. He get up and he don't know why he here.

"Where am I?" He said to himself. He felt this place is silent.

"Welcome, young one" A voice said and Sam look around for the voice.

"Relax, young one. I do not want show my body because reason" A voice said that to Sam

"Why are you here? Are you here to take me to hell or heaven?" Sam said to the voice.

"No, of course not. I'm here to give you a second chance." The voice said to Sam. Making Sam was surprise.

"I see..." Sam mutter to himself. "I'm surprise you is calm down" The voice said to Sam.

"I know most people are idiot but I am genius." Sam said to the voice. "I see... I will give you a power that you like." The voice said to Sam. Making Sam think a moment before he raise his hand.

"Could I bring Build Driver and Fullbottle" Sam told the voice. The voice chuckle as Sam see two items appear and it was Build Driver & Fullbottle. Sam grab it and he felt it was metal.

"I'm surprise you chose Build because you are genius like him" The voice say to Sam.

"True. He was my favorite Kamen Rider." Sam answer to the voice.

"So which world do you want to go?" The voice say to Sam. Sam was think a moment, he don't like RWBY because Grimm, Faunus Racist and Ozpin or Ironwood or Salem will recruit him to fight. Heck no!

My Hero Academia? He would need Hero License and he will illegal as vigilante... Heck no! He felt it was too overused.

Only one words... Honkai Impact 3rd. Yes, his favorite Games of Iphone. He could be commander, help Kiana & Valkyrie, find out about Otto's plan and arrest him and defeat Herrscher but only way is he could make a invention to bring them back.

"I'm gonna chose Honkai Impact 3rd." Sam told the voice as voice understand and the portal appear. Sam look at the portal, he knew he gonna say goodbye to his parent because he care for them and he can't go back to his world anymore.

'Goodbye, Mom... Dad...' Sam think on his mind about his parent. Sam go inside the portal before the portal close it. Soon this will be a journey of Sam Stein as Kamen Rider Build in world of Honkai Impact 3rd.