I'm going to say Manga Spoilers for this since this character has just been kinda introduced in the anime. For the manga readers reading this you might already know who I'm talking about already.

WARNING: MANGA SPOILERS

"Goodbye to this cruel world. You won't have to worry about me anymore Mom..." I lean back bracing myself for the end. As I started to fall, my back started hurting a lot. This is the end... right?

As I kept falling the pain in my back got worse. Actually I don't even know if I was still falling. I had closed my eyes to prevent myself from screaming. After a few more minutes of this horrible pain in my back it stopped. My back was numb now but at least it stopped hurting. The weird thing is, nothing else hurt. Only my back did. I decided to open my eyes and see the world one last time before I go. I opened my eyes and to my surprise, I wasn't laying on the ground. I mean I was but it was more like I tripped over a rock or something. I slowly tried to get up but my legs weren't working with me. The best I could do right now was to slowly prop myself up.

3rd Person POV:

As ???? was flying back from his patrol in a bit of a rush since it looked like it was going to rain soon. He spotted a boy with messy green hair sitting on the ground with tiny green wings poking out of his back below me. Being the curious bird ???? is, he landed in a nearby tree watching the boy slowly get up. From the size of the green haired boy's wings, it looked like he had just got his quirk a few months ago. With his small stature he looked around 15ish years old? A late bloomer? ???? scoffed.

"I wonder what he's going to end up being in the future. Maybe I can get him to become my sidekick"  The boy seems fine now as he watched the green haired boy start to get up from the ground. ???? continued on his way back home as he was ready to go home and relax from a busy day of patrolling.

Still 3rd Person POV:

As Izuku started to inspect the damage he took from the fall, he was a bit surprised. He only had scraped arms so far. As for his legs he still couldn't move them that well. Izuku reach for his back preparing myself for the mess that has happened back there. His hand had rubbed against something wet and soft. He pull back his hand covered in blood and a feather? A small green feather had stuck to his hand with all the blood. A feather?

"I need to go to the bathroom and check what has happened to my back." He whispered as he slowly stood up with wobbly legs he walked back into the school and to the nearest bathroom. As Izuku rinsed his hand off he looked up and in the mirror and saw dark green wings protruding from his back. The dark green wings were still on the small side. At the base of the wings where they start protruding out of his back was covered in blood. As Izuku slowly and carefully cleaned the base off. The realization that he had a quirk finally hit him.

"I have a quirk? I have wings, is my quirk similar to ????'s ? mumble mumble..." After he cleaned himself up the most he could, he turned around admiring his wings in the mirror. And spinning around like a little kid. When he flapped them to check that he had not broken any bones in them the dark green wings opened up. They were not so small anymore.

Now he has wings he can fly. Izuku flapped his wings trying to fly of some sort. He ended up hovering above the ground a few inches with his head close to the ceiling. He flew out of the school building and head back up the roof to get his backpack and the note. As he flew back down he took the time to enjoy the view and get used to flying. When he landed he started on his way walking back home. Why not fly home? Well... As he landed a sudden wave of fatigue hits him forcing him to walk home instead of fly. "

"Note to self: Don't fly for long periods of time." He whispered as he took his notebook out and started writing. As he walked home he ended up making a new page on ???? and a page about his own quirk as well.

"I'm back mom!" Izuku yelled as he took off his shoes and walked in. Tried to walk in... As he stepped in he tripped from his wings hitting the wall. He had not learned how to fold his wings back yet. A loud noise could be heard by the door from the kitchen where Inko was making dinner.

"Izuku! Are you okay?" Inko yelled running towards her son concerned. She had saw the villain fight and thought Izuku was hurt in someway seeing Katsuki was captured by the villain. To her surprise, she found a winged Izuku face-planted on the floor. 

Back to Izuku's POV:

"I'm okay Mom!" I yelled as I slowly got up from the floor.  "Izuku, y-you, you have wings on your back. You have a quirk!" Mom looked like she was going to faint. In the end, we both ended up crying. Mom had made my favorite, Katsudon for dinner while we talked about my quirk. I never told her the real reason. She doesn't know about kacchan. She still thinks we're best friends.