AN: As I stated I'm not going to stop writing even though I'm taking a break from some of my fics due to what happened. This is Izuku as Tsuna as I see many similarities between the two. It's taking place after the future arc which took place a few months before the entrance exam. There are two big things in this that are different from canon Reborn. First is Izuku instead of just saying he didn't want to run the mob, he'd also state that he wants to be a hero so he can't be a criminal. Second is some MHA characters will take the place of a few Reborn characters.
Chapter 1
Namimori Middle School was abuzz it was the time of year the third years filled out their high school or career path papers. A green-haired boy sat by the window writing in a notebook labeled Future Plans For Heros #15 while muttering to himself. 'How do I explain my flames? They have no heat so if I burn something maybe I could explain that I control how hot the flames feel and whether they can burn. I have to make sure to submit an application for my gloves. Just got to make sure Reborn doesn't find out. But...'
"Find out about what Dame-Izuku?" someone had asked him.
"That I'm applying for U…...A… uhh hi Reborn" Izuku tried to hide the application just for his sadistic tutor to strike him over the head and grab the papers.
"Good. Good. Looks like you've already heard and got a head start but there are a few corrections you need to make." Izuku's head must've still been spinning because Reborn would never say that.
"Wha… Ow ow ow ahh my head. Reborn what are you talking about?" He was rubbing the growing lump as he looked towards Reborn who had taken his place on the windowsill.
"Class is going to start we'll talk later." And the Hitman toddler juped out of view. 'I hate when he does that. What the heck was he talking about?'
"What are you talking about Izu?" Izuku felt his spine stiffen as he turned his head to see the prodigy of the martial arts club and his somewhat secret crush Itsuka Kendo looking at him.
"U-uh w-well R-Reborn was just h-here." He couldn't help but stutter around her. Her teal eyes just drew him in. "I still remember the day I made a fool out of myself in front of the whole school because of that little jerk."
_Flashback_
"I TOLD YOU I DON'T WANT TO BE A MOB BOSS I WANT TO BE A HERO! SO SHOO!" Izuku's mom had hired a tutor to assist him in (as the flyer said) becoming a leader amongst men and assisting your child in achieving their dream. The Toddler tutor just chuckled as he strolled alongside Izuku.
"LOOK OUT!" The warning came too late as a person on a bike barreled into Izuku. 'Just my luck.' His head spun as he tried to get his bearings.
"I'm so sorry… Oh heya Midoriya you ok?" The person helped him up as he came to just to see Itsuka mere inches away. He went red and nearly tripped again back away from her.
"I-I u-uh I-I'm f-fine Kendo. T-Thanks for asking." He tried to stay up straight but was too flustered to stay straight. She used her quirk to help him find his balance then looked at him with concerned eyes.
"You sure? A hit like that could have left some damage." Izuku was so tongue-tied he could only nod. "Well If you're certain I guess I'll be on my way but please at least go to the nurse when you get to school if you don't feel well." She got on her bike and pedaled off as her orange hair fluttered in the wind. He just stood there with a goofy grin until the toddler spoke up.
"You like her. You should just ask her out." Izuku spun on his heels waving his arms.
"I can't do that! There's no way she feels the same way I'm just a clumsy quirkless kid!" The toddler frowned and the chameleon on his hat crawled to his hand and formed a gun.
"Guess we are doing this the hard way." He leveled the gun at Izuku and fired. Izuku fell backward as the bullet hit. 'Is this how I die? No, I still have to tell Itsuka. I CAN'T DIE! WITH MY DYING WILL I WILL CONFESS!' His clothes burned off as he rose.
"REBORN! I WILL CONFESS TO ITSUKA WITH MY DYING WILL!" He spirited off after her just to pass her and get hit by a truck as she petted a dog. He redirected himself on a poll and jumped over rooftops to find her again. He spotted her by the gate chatting with the school idol Kyoko Sasagawa. He rolled to a stop in nothing but his boxers and grabbed Itsuka's hand.
"ITSUKA KENDO I LIKE YOU PLEASE GO...out with… a-a-ahhhhhh!" He started panicking as whatever controlled him disappeared.
_Flashback_
"Izu...Izu… 'snap' Izuku! Jeez man, what were you thinking of?" Kendo was leaning over snapping her fingers startling Izuku out of his daydream.
"O-oh uh n-nothing serious just um wondering what he's up to this t-time." Izuku tried looking at anything but her. And saw Hayato Gokudera and Takeshi Yamamoto entering the room waving in his direction.
"Judaime! We've filled out the applications!" Gokudera bounced over towards Izuku looking like a puppy waiting to be praised.
"Yeah, Izuku that wasn't so tough I thought UA would have more to their applications." Yamamoto strolled over without a care in the world.
"You sure you didn't grab the wrong sheet baseball freak?" Gokudera sarcastically asked.
"Ma Ma I grabbed the same one you grabbed Gokudera. So Izuku have you finished yours yet? We got to turn them in during homeroom." Yamamoto shrugged while sneaking a glimpse at his paper.
"Uh" Izuku looks at his sheet seeing it's done "Huh I guess I finished it while daydreaming. Do you know if the others finished their Gokudera?" He looked up at his grey-haired friend.
"Yeah Chome told me she finished the Gen ed application, that annoying 'manly' shark head said he finished his, and I had to help Denki finish his. Don't know about that aloof bastard but knowing him he was probably the first one done." He showed the texts he got to Izuku. Izuku sighed in relief.
"I think it's great you all are applying to UA I know you'll make great heroes. Izu-Kun is already my hero after what he did… uh during that time." Kendo's words made Izuku blush and Yamamoto chuckle. "None of you can fail you got that I don't want to be the only one there."
"Don't worry Kendo there's no way any of us will fail," Yamamoto assured her. He looked around seeing more kids piling in the room. "Well, I'll see ya guys later gotta get to homeroom!" He sprinted out of the room waving to them. After that, the day went by as normal as a day at Namimori could be. Izuku tripped twice in the gym and nearly fell down the stairs all in all a good day for him. He walked home with Gokudera, Kendo, and Yamamoto. Seeing Denki and Eijirou by his front gate he ran to greet them only to trip and fall on something soft.
"~Mhm Izu-Kun if you wanted to touch my butt all you had to do was ask.~" A sensual voice whispered into his ear. He jumped up and nearly fell backward when he noticed he was holding onto a disembodied butt till Kendo caught him.
"Setsuna how many times do I have to tell you not to do that?!" Itsuka yelled at their friend from the private all-girls school that was a few blocks west of Izuku's home. Setsuna reformed and chuckled.
"What's wrong? Izu knows just how much I ~adore~ him. There's nothing wrong with a gal helping out the man she ~Loves~" Setsuna was stalking around eyeing Izuku with a predatory smirk. Her gaze shifted when she heard Gokudera click his tongue and a mischievous smirk appeared.
"Sorry, greyby I'm not into chain smokers. Or are you jealous of how close your precious Judaime and I are? I didn't know you swung that way. Maybe if you're good enough you can come to watch once me and him get together." Each word seemed to be designed to get under his skin.
"Judaine tell her to stop!" Gokudera cried out.
"Setsuna-chan I t-think that's e-enough. C-could you m-maybe s-stop?" Izuku was used to her antics and had become the older sibling stopping the younger kids from fighting whenever she targeted Gokudera. Though sometimes it had an unfortunate side effect.
"~Of course anything for you.~" She threw her arms around his neck and blew into his ear before scurrying around and jumping on his back mumbling about how warm it is and dozing off.
"Oof ok ok so how was your day guys?" Izuku stained to say as they walked through the gate and towards the door.
"Super manly!/At least we didn't have a test." Eijirou and Denki responded.
"Sure you don't need help boss?" Denki asked eying the girl who was latched onto Izukus' back.
"One don't call me that we are all friends here, and two could you get the door the sooner we get to the couch the better." The girl on his back stirred a bit and moaned "bed" Denki was chuckling as Izuku calmed himself down. "Yeah not falling for that again." Setsuna pouted and went back to her nap.
"Man it's so manly how he can just take charge like that." Eijirou whispered to Denki "Want to bet how long it will take her to get him in bed?" Denki asked. Eijirou took a second then nodded.
"Oh, that's so cute!" Izukus' mother Inko Midoriya was at the door waiting for them. "Here let us get Tokage-chan to the couch, you're such a good friend for carrying when she's tired, my little hero."He went over and opened the blinds to let the sunshine in as Izuku sat Setsuna on the couch. He then said he'd be right back and went to his room to change just to find Reborn hanging from a cocoon upside-down.
"Took you long enough Dame-Izuku I was starting to get dizzy. I got word from the ninth." Izuku was about to hightail it out of there until Reborn caught him with a net. "You should be happy Dame-Izuku the ninth is going to let you fulfill your dream. He wants Vongola to integrate into hero society as the dying will flames can easily be written off as a quirk now. He wants you at UA to make allies with future heroes and we have ten months to move closer and train so you better be prepared."
Izuku would later say those ten months were true hell compared to his earlier training. "This is the story of how the tenth boss of the Vongola Mafia became one of the greatest heroes of his time!"
AN: I had a lot of fun writing this so I hope you all have just as much fun reading it. I swapped Lambo and Ryohei out with some MHA characters as Lambo is only five and Ryohei would be in high school following his boxing dreams. I had a lot of fun writing for Setsuna.