Castiel and Deans kids?

Graduation day

Stiles
"Stiles time to get up and get ready now hurry up, We need to pick up our friends today is the day we graduate so hurry up up up now." yelled Alice my twin sister.

Today is the day me, Alice, and our friends graduate today from beacon Hills high school. My boyfriend Derek is proud of us all for graduating and staying here in beacon Hills for college.  Even though he wants us to get out of here.
I get up from my bed to go to the bathroom. I see Alice finish brushing her teeth. She looked at me with her blue eyes that will make anyone love her. But, she ever what them because she doesn't know how beautiful she is. She walk away saying excuse me. Her and matters. As I get in the shower thing a back the practice for graduation. When I get done I looked in my mirror I have my moms hair and have my dads eyes. I'm making everyone proud of want I accomplished in through my 12 years in school is finally over. I walked in my room and start to get dress and put on my graduation gown on. I still can't believe that their making us get up at 6:30am get ready to graduate at 7:30am that is really messed up. But Alice and I woke up at 5:30am to do what we need to do in the morning.
I came down stairs to make breakfast for me and Alice. By the time I'm done eating its 6:25am.
I called to Alice "Alice get your ass downstairs or im your ass here and you won't graduate" Alice ran so fast downstairs because she wanted to graduate so bad she almost didn't graduate but she did.  "Where is dad stiles " She said her blue eyes looking like a scared little kitten. "He left to go school because, he needs to see if our last name is right. He need to do last minute things also. And Alice we're picking up Melia because everyone else has a ride OK" I said excited. Alice and Malia are like inseparable as friends like me and Scott. When we pick up Melia we were listening to queens album. When we get to the school we checked in. "Hi Stiles and Alice Stilinski" to the old lady name is Elle the schools nurse who volunteers to help for this special day. "I'm sorry there is no Stilinski but there a note from your father saying your last name is Winchester" she said. We got so confused but we took our seats in the W's I called my dad "hello" he answers "hey there's been a mixed up were in the W's" "there's no mixed up but your last name is definitely winchester" what i going on I said in my head "I have to let you go talk to you guys later bye" He hinged up on me. "what happened" Alice looking like a cute scared little kitten. "dad put our last name in Winchester and is going to talk to us later." I said exhausted from talk to dad.
Time skip graduation is done
We all graduated and now Alice and I are at home watch stuff on tv waiting for our dad to get home.
Time skip it 5:30pm
Dad is finally home thank god took him forever to get here. We turn off the tv and dad stand in front of us. "Today's the day I'm going to tell you something important" dad said "what is it dad?" Alice said nervous we look at him and he said the two words we didn't expect
"you're adopted" John said