Why was 6 afraid of 7?

Because 6 always had a crush on 7, but never had the courage to ask her out. His friends 8 and 9 pushed him to ask her out to prom, and she said yes. They fell in love and got married, 6 got a job as an electrician and 7 played as the house wife. They had 2 beautiful twin girls named 4 and 5, they liked to play hide and seek in the back yard a lot together. But was getting stressed out because he couldnt pay his bills which caused him to drink, he started to get distant from his own family. 6 started taking it out on his wife and kids by beating them. One day 6 took it too far and killed 7 right in from of 4 and 5, and then called the police, and hung himself in front of his kids.4 and 5 for taken to an orphanage after that, they couldnt get the image out of their head, of their daddy beating mommy and hanging himself afterwards without a thought of his own kids. A lot of the kids in the orphanage didnt like 4 and 5, they made fun of them for having weird names, all that they had was each other. One of the top dog orphanes, 17, started pushing around 4, 5 tried to step in and protect her twin sister, but he was too strong and threw her out of the way. 17 began to tear off 4's pants as she cried and flayed, and then began to unbutton his own pants. A huge member came out of his trousers, in the shape of a 7, and stuck it inside 4's 0. 5 flailed her arms on 17's back crying for him to stop, but he threw his arm towards 5, causing a deep red gash on her forehead, she was knocked out. 17 began to take his hands and cover them over 4's mouth and nose, leaving her unable to breathe, and then faded to a darkness. 17 was given a life sentence in a high facility prison for the murder of 2 girls.