Deku's Half Sister

Prologue

I got this idea from LadybugfanRenee "The Miraculous Assassin Princess" but instead of Assassination Classroom AU it's MHA/BHNA and there's no Princess Mari. Some info is cannon but some I made up to fit the story.

Marinette/Nakano's POV

My name is Nakano Cheng Midoriya or as most people call me Marinette Dupain-Cheng. My mother is Sabine Cheng and my "father" is Hisashi Midoriya if that even is his real name. My so called father came from Japan. In Japan they have powers called Quirks, these Quirks give people powers and most people use them for good, some however use them for evil. My father's Quirk was a Weather Manipulation Quirk, the Quirk caused cellular degeneration, from repeated use, attempt to cure this detriment, he donated his body to the League of Villains and underwent a procedure where he was injected with the DNA of All For One the number one villain in Japan, acquiring the same ability to steal Quirks as a result, however he was to be obliterated as a failure being that he was only able to hold 5 Quirks.

He changed his name to Hisashi Kaiju after escaping barely from the League's clutches. He eventually married a women named Inko Midoriya and changed his last name to Midoriya. A year later Inko gave birth to my older brother Izuku Midoriya. Izuku Quirk had him able to hold 3 Quirks, from father, Including levitation from his mom. Father found out before Izu's mom and wanted that power so using the one slot he had left, he stole Izu's power to hold multiple Quirks as well as his levitation Quirk, then left saying he was doing business overseas. Izu was to young to remember and his mom never knew in the first place.

After leaving Japan he came to Paris to experiment on someone to harbor a child to see if the child would develop one of the Quirks. Then he found my mother, he drugged her and raped her, then manipulated her into thinking he was the one to save her. My mother found out she was pregnant with me and father helped her. They started to date and at one point my father loved my mother. I was born and was named Nakano Cheng Midoriya, Mother eventually found out that father raped her, father explained why e came to Paris and that he did truly love her, Mother thought he was just saying that so he could stay and take away my Quirk when it fully developed if I even had one. Mother didn't take a chance and kicked him out and filed a restraining order as well as a lawsuit for sexual harassments. Father got deported from Paris back to Japan, at that time I was 3 turning 4 in a few weeks.

Once I was 4 I started to develop my power, I had levitation powers from when father took Izu's, Scan which was probably a Quirk father stole from someone when he was in Japan before coming to Paris, and what I call copy and paste. The Quirk which I assume is a mix between All For One, Scan, and a Quirk father stole that can copy someone's Quirk. Copy and paste basically lets me copy anyone's Quirk just by looking at them and saves them for use at any time. The only down side is that I have to study that Quirk till I have a full understanding of the Quirk, but with Scan I can understand anyone's Quirk within 5 mins and use each Quirk to it's full capabilities. When my mother found out she told me about father, my older brother, and my brothers mom. With my advance memory courtesy of my mother and maybe a undeveloped Quirk from my father. I vaguely remembered how my father looked.

At 6 years old I learned how to hack and found Izu and his mom's address. I told mother and she was slightly furious but overall proud of me. During the summer we went to Japan and found Izu and his mom. They were skeptical at first but after a DNA test and me showing how my Quirks work they were convinced. We stayed with them for 2 months and during that time me and my bro bonded while our moms got closer ( ͡• ͜ʖ ͡• ). We also explained that father took Izu's Quirk and that he wasn't born Quirkless. I scanned brother to see if there are traces of any Quirks at all I found nothing. He said it was ok and that he will still become a hero Quirk or not. I promised him that I would become a hero too and stay by his side no matter what. 

2 months passed by fast and mother and I had to leave Japan but we agreed to vid chat every week and visit each other whenever we had break. This has been happening for 8 years now and I found out brother inherited One For All from All Might, the number one hero, and goes to U.A. I'm so proud and happy that brother has another chance to become a hero. Brother taught me how One For All works and showed me when we went to visit, though he could only control 10% at the time. Brother told me to not use One For All unless completely needed which makes sense. I remember all the stories brother told me about breaking his bones and having to stay in a hospital bed a lot. Which to be honest was kinda funny, he was reckless and that was the drawback but he did save his friend from Hero Killer aka Stain and was recognized by Stain as All Might's equal. I'm proud of brother and I hope I can join him soon to keep my promise, but for now I have to get ready for hell. 

Ever since Lila showed up and lied to everyone turning them against me, I've been isolated to the back of the classroom. Alone. My only friends, Chloe, Kagami, and Luka are either traveling or go to a different school. Chloe is in New York with her mom, Kagami is in Korea for a fencing tournament, and Luka is in Université but he always visits me after school and we video call Chloe and Kagami at my house. Chloe, Kagami, and Luka know about my brother and I, and instead of calling us freaks, they excepted us. Though I've gotta be thankful to Lila without her I wouldn't know who my real friends are. 

I walk into the class and see everyone surrounding Lila again as she her spins lies. I go to the back and sit down by myself like every other day. 

Maybe today wont be so bad... or so I thought.

Sooo if I give Mari a love interest who should it be someone from mha or should I use a character of mlb.