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Deku, Pine Tree and Shooting Star

Summary:

Izuku Midoriya was the ninth wielder of One For All and the successor of All Might. He attended UA in order to become the next Symbol Of Peace. On the way, he met two foreign student and together, they aiming to become the top heroes

Dipper Pines and Mabel Pines were two foreign UA student from Gravity Falls. They're aiming on become the top heroes and on the way, they made many friends at UA.

Notes:

Hey guys, this is my second fic on AO3 and my first crossover fic. I hope you guys enjoyed.

*Disclaimer*
I didn't own the characters. Boku no hero academia belongs to Horikoshi Kohei and Gravity Falls belongs to Alex Hirch and Disney. There were also some references and character that belongs to Gravity Falls AU Transcendence AU which also not mine.

(See the end of the work for more notes.)

Chapter 1: The Pines

Notes:

(See the end of the chapter for notes.)

Chapter Text

“Come on, Dip! We cannot be late for our first day!” “Calm down, Mabel. The school won’t start until 9. It’s only half past seven right now.” Dipper sighed seeing his twin sister's enthusiasm. “ I know but we could take this time to know our classmates!” Mabel exclaimed happily.

Dipper cannot blame her for that. They have spent almost 3 years training with their great uncles, or for short, grunkles in Gravity Falls to mastered their quirk so they could participate the foreign student entrance exam for UA, the most prestigious hero school in the whole world. After a lot of convincing for their parents, they finally allowed to participate the exam which take part last month. Dipper almost fainted when they got their result letters and there’s hologram of the pro-hero / teacher Snipe announced that they passed the exam.

“I still can’t believe that we are going to UA! Mom and Dad were so happy, Grunkle Stan and Grunkle Ford even pay for our trip here.” Mabel said. It’s true, since the attack by the villain Bill Cipher and his Henchmaniacs, Mystery Shack have become a must visit tourist attraction even more popular than ever, paying for their trip to Japan were just a small matter. Grunkle Ford even get his research partner help in Japan to rent a medium sized apartment for them.

“ I know Mabes. But keep your bubbly self for our new classmates.” teased Dipper. He is wearing the standard UA school uniform, with the addition of his favourite blue and white pine tree trucker hat. Mabel pouted and land a weak punch on her twin’s shoulder. “Ouh! MABEL!” He shouted. Mabel run away ahead while turning around and stick his tongue out to her twin. She wears a standard UA uniform, save for her iconic shooting star sweater tied around her waist.

As she run and not looking where she’s going, she accidentally crash with another person “Ahhh!!!” She fall on her hip. “Mabel!” “Oh my god! I’m sorry! Are you okay?” Mabel looked up to see a boy, maybe around her age, having green hairs, eyes the same colour as his hairs, and freckles on his face giving her a hand to help her up. “Yeah yeah! I’m ok! No need to worry!” she said as she accepted the boy's hand. “Mabel! Are you okay?” Dipper said as he reached those two. “ I’m okay bro bro. No need to turned into overprotective brother mode right now.” Mabel said as she patted away the dust from her skirt.

“ I’m not overprotective! I’m just worried.” “ Are you okay? Sorry for my sister’s clumsine- OUCH ” Dipper said to the boy as Mabel elbowed his rib. “No no, don’t worry. I’m okay... Wait, are you guys going to UA?” the boy said. “Yes, and judging from your uniform, you too are going to UA, am I right?” Dipper said. “ Yeah! My name is Izuku Midoriya. Nice to meet you.” Midoriya introduced himself. “Nice to meet you too. I’m Mason Pines, but just call me Dipper and this is my twin sister, Mabel.” “Hi!” Dipper introduced themselves and Mabel greeted Midoriya.

“Wait, are you two the foreign students from America?” Midoriya asked with widened eyes. “Yup! That’s us!” Mabel answered him. “Wow! That’s cool! Did you guys want to walk school together? I want to asked a few questions along is you didn’t mind.” Midoriya said. “Sure. Why not? Also I’m pretty sure we are lost right now.” Dipper said while scratching the back of his head. The trio then walked together ( in Mabel case, skipped ) to school while talking about things.

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“Oh, so you lived with you grunkles for the past three years to mastered your quirks?” Midoriya said as they walked along the corridor going to their class. Fortunately, Dipper and Mabel were placed in class 1-A, the same as Midoriya. This give him some relief as he had know someone else in the class. “Yup! That’s right.” Dipper said while his eyes observing the school.

“Hey guys! I see the class!” Mabel said as she pointed to a giant metal door, painted with the word 1-A in red. “Wow! Such a huge door!” Dipper said in awed as he eyed the door. The door almost 2 metres tall. “Yeah! What do you think Midori- Hey, are you okay?” Mabel stop herself as she glanced to Midoriya and she knows he’s nervous. “Uh, nothing. I’m just, you know, nervous.” He said. Mabel smiled sadly to him. She then take out a small, blue ball from her pocked and gripped it tightly. She then put her other hand on Midoriya's shoulder. “Hey, relax. No need to nervous. We are here with you.” She said. Midoriya suddenly felt a calming feeling in himself. The feeling were unnatural, but not unwelcome. ‘What is this feeling? Is it her quirk?’ he thought. He turned his head to her and saw her calming smile. He returned her smile and sigh. “Thank you.” He said. “ Ok, get in now.” Dipper said after see his new friend calming down from his nervousness. ‘Please I hope Kacchan were not in the same class as me' he thought.

'Of course he’s in the same class as me. Of course.’ Midoriya mentally hit his head into the wall when he saw Bakugou in the class, putting his feet on the table while been shouted by a boy with raven-coloured hair and wearing glasses. “ It’s such a disrespect to the school and the older upperclassmen to put your feet on the table! Put it down right now!” the boy said to Bakugou. “Shut up four eyes! Like I care!” Bakugou yelled at the boy. “ Four eyes?! My name is Tenya Iida from Somei Academy!” said that Iida guy. “Somei huh? Some stick up the ass elite you are heh. I should blast you to bits!” growled Bakugou. “Ehem” Dipper cleared his throat to gain their attention and it’s working. “Deku” Bakugou growled while starring dagger at Midoriya.

In a blink of an eye, Iida suddenly were in front the trio. ‘How the hell he got here so fast?!’ they thought. “Greetings! I’m Tenya Iida from Somei Acade-” “Tenya Iida from Somei Academy. We heard that first time.” Mabel cutted the robot-like boy before he could finish. “Oh, I remember you! Sorry to underestimate you. You clearly sees the hidden purpose of the exam.” Said Iida while he’s bowing at Midoriya. “Oh, no. I didn’t know about the new rescue point. I just destroyed the zero pointers to save the girl trapped underneath the rumble.” Said Midoriya while rubbing the back of his neck. “Then you exceed my expectation. You saved the girl with heroic instinct. Definitely a character of hero!” said Iida while moving his hand in chopping motion. ‘I swear this guy was a terminator in disguise’ Dipper thought.

“ What’s a zero pointer?” Mabel asked. “What? You didn’t know?” Iida asked. Mabel shook her head. “ We didn’t have anything called zero pointer in our exam in America. We have some villain fighting simulation with some volunteers third year student from local hero school.” Said Mabel. “America? Wait, are you the foreign students who took the foreign UA student entrance exam?” asked Iida with a shock on his face. “Yup! My name is Mabel Pines. And this is my brother Mason Pines but you can call him Dipper!” said Mabel cheerfully while slinging her arm on Dipper’s shoulder. “Are you guys twins?” Dipper rolled his eyes at Iida obvious question “Yup again!” answered Mabel. 

“Hey, it’s you!” the four turned around to see a brunette girl with bob cut hair and brown eyes. “You are the one who saved me from the giant zero pointer!” she said while looking at Midoriya. “Oh, it-it's no-n-nothing.” Midoriya shuttered with visible blush on his face. “ I’m Ochako Uraraka by the way. Thank you for saving me!” Uraraka said. “ You’re welcome. I’m Izuku Midoriya, this is Mason Pines, but you can call him Dipper, his twin sister Mabel Pines and that is Tenya Iida.” Midoriya introduced himself and his new found friend. “Wait, are you two the foreign students? Your name doesn’t sound local.” Uraraka asked as she tilted her head. “Yeah! That’s right! I’m Mabel and I loved pigs. I hope we can be friend!” beamed Mabel while shaking Uraraka's hand. Uraraka chuckled seeing Mabel's enthusiastic personality. “I hope so too.” Say Uraraka while returning the hand shake.

“If you’re here to make friend, I suggest you leave.” A grumpy voice startled the small group. They looked at the door entrance to see a caterpillar? A man? A caterpillar man? A pre-metamorphosis mothman? The may-or-may-not- a-caterpillar man turned around to showed itself to be a man inside a sleeping bag. The students starred the man for a few seconds before they rushed into the class. The caterpi- the man wiggled himself into the classroom and stand behind the teacher’s desk. “ It took you 8 second to silence the class. In hero course, time is money. I’m Shouta Aizawa and I’m gonna be your homeroom teacher.” Everyone thought the same thing 'He is the homeroom teacher?!’ Suddenly he pulled out 21 blue gym outfit from his sleeping bag. 'How does he fit all of that inside his sleeping bag? Pocket dimension?’ Dipper wondering. “Get into your PE uniforms and meet me at the training field.” Aizawa said

Notes:

Mabel and Dipper's quirk will be explained in next chapter. Feel free to leaves some kudos, comments and suggestions