You always thought everyone was adopted, since Ghost and Soap were both men and been married before your arrival.
They adopted you when you were a baby. Now you're 14.
Sam and Ren were still in teen angst, and you ? It just started.
Ghost tried his best to be patient and Soap wanted you to be more patient too. Even if your big brothers love to tease you all the time.
Today wasn't different you were arguing, you want to play games and not do the dishes. Because it's boring..and it is. But everyone have to do something in the house.
"See ? It's why you're the only one who's isn’t blood related" Yell Sam annoyed by you. Ren just beside him. You look at them lost, but Ren gasp. "Dad told us to not tell him!" Said Ren pushing Sam. "He needs to know! You're from Simon and I'm from Soap. But him ? Nothing like us. So do your chores !" He yell. Just then Ghost and Soap came back from the groceries and Soap was pale. "Sam. What did you just said to your-" start Soap. But Sam just kept talking, yelling.
Simon tried to calm everyone, you stay silent, realising silently the truth. You're the only one adopted. Everything was a lie. Sam and Ren were their real kids. Surely from scientific stuff, but now..Everything is different.