Time skip to the day before the wedding
Marinette and Adrien were helping their parents get the finishing touches on the wedding.
With Marinette and her mother
"Oh dear, I'm so scared what if something goes wrong."
"It won't. Its will be fine. Its just cold feet."
"Yeah your right it will all be fine I'm so glad to have you here with me on this day."
"No problem mom I would never let you do this alone."
"Honey will you be my bridesmaid."
"Yes mom I would be honored to be your bridesmaid."
"Thanks honey. Now let's go to bed so that we can wake up to get ready."
"Okay, good night mom." She goes upstairs, transforms and leaves to patrol."
Meanwhile with Adrien and his father
"Okay everything is done father."
"Okay son. Good to sleep and I will see you tomorrow bright and early. Oh son."
"Yes father?"
"Will you please be my best man tomorrow."
"Yes father I will be your best man."
"Thanks son your a lifesaver."
"No problem father. Good night dad."
"Night son."
Adrien goes into his room, transforms and leaves through the window. When he arrives he see ladybug sleeping at the meeting place.
"LB are you okay?" Ladybug suddenly wakes up. "Oh hey Chat what took you so long to get here."
"Oh well I was helping my father with something and it took so long to get done."
"Okay that makes sense." [Wow we were so busy tonight.] "Well then let's get this over and done with so, we can get some sleep so we can function straight tomorrow."
"Okay m'lady let's do this."
After patrolling
"Good night Chat Noir."
"Good night ladybug."
Time skip to the wedding because I am tired as fuck
The wedding starts and Adrien and his father waiting in the front at the altar. Marinette starts to walk down the aisle wearing this dress.

Adrien stares at her with awe and thinks *wow my stepsister looks so beautiful, I love her so much.*
Marinette's mother walks down the aisle wearing this dress and this Vail
(the flower arangement is at the top of the page.)

Time skip to the reception because no one wants to hear all that stuff just know they both I do
Adrien POV
When the music starts up everyone starts to dance except for marinette, so I walk up to her. "Hey marinette do you want to dance with me." When I asked her she looks shocked but then she said "sure Adrien I would love too dance with you." When she agreed I just could not help, but pull her to the dance floor. *laughs* "Woah Adrien slow down." Her laughter makes me smile and very happy.
No ones POV
Adrien and marinette dance together until the night was over. Their parents walk up to them. "Kids lets go to the house, its really late."
"Okay father let's go." They leave and head to the Argeste house. "Okay marinette we don't have your room ready so you will have to sleep with Adrien for a while. Is that okay with you." Said Mr. Argeste
"Yeah that is okay with me."
"Good, now go to bed. Good night you two."
Adrien POV
When my father said that marinette has to sleep in my room until her room is ready I was so happy. "While let's go my room is this way."
"Okay than lead the way."
I shake my head and we walk toward my room. When we get there I open the door and walk in. Then I turn around to see her in such awe in her eyes as she looks around my room.
No ones POV
"Wow your room is huge."
"Thanks but to me it is just too big."
Marinette walks to him. "Well hopefully now that I am here hopefully it won't feel like that."
After she says this Adrien hugs her. "Thanks marinette you are the best thing that I can ask for."
"Your welcome and please call me mari."
"Okay thanks mari. Oh and you get the bed I will sleep on the couch."
"Are you sure."
"Yeah."
"Thanks Adrien."
"No problem sister." They stay hugging until his door opens to show marinette's mom."oh sorry did I interrupt something." They pulled away from each other. "No mom you didn't.
"Okay well here is your pj's for you."
Marinette walks over. "Thanks mom."
"No problem honey." Marinette's mom  leaves. "Hey Adrien where is the bathroom."
"This way." He leads she to the bathroom and waits for her to come out.
A few minutes later
Adrien POV
When mari comes out my mouth drops she looks hot.
(This is what she looked like.)

"Wow"
"Do you like it?"
"Yes you look good. Where did you get it?"
"I made it."
"Wow you made this."
"Yeah I wear this sometimes."
"Cool and I bet Chat Noir would think so too."
"Really you think he would?"
"Yeah I think so." *because I am him*
"Well good night."
"Night sis."
Time skip to next day
After breakfast as a family Mr. Argeste  and marinette's mom leaves for their two week honeymoon and marinette and Adrien go to school. (Adrien's father give marinette's school Adrien's school records so he could go to her school. His schedule is the same as on the show.) When they get there marinette gets hugged by Alya. "Hey girl, hey Adrien." Both of them say hi back. Just then a boy with headphones walked up to them. "Hey girls." Adrien is confused about who just walked up. "Hey sis."
"Yeah Adrien."
"Who is he?"
"Oh that's nino. Alya's boyfriend. (yes Alya and nino are dating in this story.)
"Okay sis."
"Dudette why is he calling you sis." Nino asked Marinette
"Oh he is my new step brother."
"Cool dudette. Well then welcome to the crew." Nino puts his hand out
"Thanks." Adrien shakes his hand
Bell rings
"Well we better go in so we are not late." Said Alya
The other three says okay and then they leave to the classroom. When they get there marinette is tripped by a blonde girl with a ponytail and a yellow/black striped shirt with a white unbuttoned jacket. "Oh look Maritrash can't stand to two feet without falling over." Adrien walks passed her and helps marinette back up. "Are you okay sis."
"Yeah I am fine. I'm used to this thing happening all the time."
Adrien then turn his attention to the blonde girl next to him. "Who do you think you are to trip and bully people around."
"For your information I am the daughter of the mayor and the most popular person in the school."
"Doesn't give you the right to be mean to others. You can still be popular and be nice."
The blonde girl scuff's and walks way.
"Wow dude you stood up to chloe no one has had the guts to do that before. This kids cool."
The teacher walks in "okay everyone please take a seat." The three of them takes their seats and left the Adrien wait to be assigned a seat to sit. Then the teacher see Adrien and says"oh you must be my new student."
"That is right."
"What is your?"
"Adrien, Adrien agreste marinette's new stepbrother."
"Oh yes your parents just got married." Then she got the classes attention "okay class we have a new student named Adrien he is marinette's stepbrother." Everyone in the room says hello. "So Adrien would you sit by nino."
"Okay miss." He walks over to nino and sits down. They first bumped. Then class starts.
Time skip because the rest of the day was the same as first period
As everyone leaves the crew goes and gets icecream. After they got the icecream marinette and Adrien start to walk home. When they get home they decided to watch a movie together. Half way through the movie marinette falls a sleep, so Adrien paused the movie, picked her up, and put her on the bed. Then he climbed into bed with her and kissed her on the hand and says "good night Mon Cheri". (Like this)

Then fell asleep next to her while cuddling her. (Like this)

When Marinette wakes up she will be so surprised as to the position they are in right now. Well that's all for now stay tuned for the next part of the story, bye.