Kiyotaka was getting chased by white-room guards in the forest because he had successfully escaped the whiteroom. Then kiyotaka stopped at a address, this was the address on his paper, when kiyotaka was in the white room and investor by the name of mr.sakanayagi discuss a plan to help kiyotaka escaped the white-room and to meet up at his home knowing that the white-room guards can't touch his home because it is property of the japanese government. Kiyotaka knocked at the door, Mr.Sakanayagi opened the door and brought Kiyotaka inside his house.
Mr.Sakanayagi : If you dare go into my property or tell "that man" where Kiyotaka is or this location, I will forcely retaliate by telling the higher ups about the white room and the illegal experimentations that go on in the white room.
The white room guards responded by leaving Mr.Sakanayagi.
Meanwhile with the white-room guards
Guard 1 : Professor Ayanokoji is going to be pissed at us, having his masterpiece the only successful experiment of the white-room escape.
Guard 2 : The thought of what he's going to do to us is terrifying.
The white room guards had finally made it back to the underground facility called the white-room.
The white-room guards had reported the succescity of the mission to professor ayanokoji.
Guard 1 : The mission had been a failure.
Professor Ayanokoji : WHAT, HOW DID YOU LOSE SIGHT OF ONE KID I KNOW HE IS THE MASTERPIECE OF THE WHITE ROOM BUT HE IS STILL ONE KID.
Professor Ayanokoji was visibly angry.
Professor Ayanokoji : Guards dispose of them.
Guard 1 : Wait please.
Guard's 3 and 4 were holding them.
Professor Ayanokoji : dispose of them because they are useless.
Guard's 3 & 4 began to beat Guard 1 & 2 to death.
Meanwhile with kiyotaka
Mr.Sakayangi : You may be wondering why I freed you only out of all the other whiteroom students.
Ayanokoji : Why me only.
Mr.Sakayanagi : With you, Me and you can destroy the white-room.
Kiyotaka : Why do you need me to destroy the white-room, can't you get the higher up's to destroy the white-room.
Mr.Sakayanagi : it's not that easy, The white-room can just relocate and they can kidnap more kids and nurture them to be monsters, to be honest I don't think the higher ups can handle the monsters nurtured in the white-room, But since you are the masterpiece of the white-room none of them can even come close to your overall abilities no matter how many monsters they make you will still outclass them.
Kiyotaka : Okay.
Mr.Sakayanagi : Why don't I offer a proposition, I will grant you your freedom ayanokoji kiyotaka as long as you team up with me to destroy the white-room.
Kiyotaka : We have a deal.
Mr.Sakayanagi then goes upstairs and request arisu to come downstairs.
Arisu : okay father.
Arisu then walks downstairs and notices that their was a little kid downstairs and recognizes him to be the masterpiece of the white room, the demon of the demonic 4th generation.
Arisu : Father why is the masterpiece of the whiteroom here.
Mr.Sakayanagi : He's going to be your little brother.