After a few days, All Might would train Midoriya on the beach by making him clean all the heavy trash there but there was something on All Might's mind, Midoriya noticed this but decided not to say anything.
Sora was out on his morning run, He decided to run a different direction than his usual route, He then sees the beach and sees the pile of trash that All Might and Midoriya use to train.
"What the..?" Sora said as the pile of trash echoed his voice, The echo immediately gave him an idea, he walked towards the pile of trash.
"La~" The echo made his voice louder without him even using his quirk, He smiled and started singing just as Midoriya and All Might arrived.
As All Might was about to tell Midoriya to start they heard singing of someone familiar, they decided to quickly hide as they listened and watched Sora as he started singing.
"Let's go in the garden~
You'll find something waiting
Right there where you left it lying upside down
When you finally find it, you'll see how it's faded
The underside is lighter when you turn it around
Everything stays right where you left it~
Everything stays~
But it still changes..
Ever so slightly, daily and nightly
In little ways, when everything stays~"
Sora started crying as he sung, He could feel the tears coming down from his face but he smiled as he looked up, Midoriya was worried about him but All Might knew why he was crying, He knew the meaning of the behind the song Sora sung, It was about his past, his life, his parents..
Sora eventually wiped his tears away and walked back to the side walk as he started his morning run again.
Midoriya stood up and looked at where Sora ran, He had a worried expression on his face as All Might placed his hand on Midoriya's shoulder.
"Young Midoriya, Do you happen to know anything about Young Higurashi's family?" All Might said in a serious tone.
"Well.. No.. but I asked around school and I've only heard that as soon as school is done, He usually runs off to the café nearby our school and that he hasn't participated in any school events ever since the..." Midoriya immediately puts hand on his mouth to shut himself up.
"The what, Young Midoriya?" All Might said in a confused tone.
"Well.. It's personal to Higurashi-san.. I don't think I should.." Midoriya said as he didn't know what to do, He wanted to help All Might but didn't want to say anything that's too personal to Sora.
"Young Midoriya, Please tell me, I want to help Young Higurashi, He is a kind boy who does not deserve to cry.." All Might said as he poofed back to his skinny form.
Midoriya looked at All Might then sighed and nodded "The Villain Attack.. Higurashi-san's parents were heroes that goes by the names Harmonic and Vocalist. Harmonic's quirk is known as Calm Song, It allows her to sing a calming melody to make her opponents lower their guards so she can easily beat them and Vocalist's quirk is known as Vocal Wave, It allows him to produce sound waves he's heard as well make them in a higher or lower pitch. I've been trying to find any information I could to maybe understand Higurashi-san a little better but it's as if the internet completely erased them from existance, It's like no matter how hard I try to look for information on them I just end up in a dead end" Midoriya said, His hands were shaking because it felt like he betrayed Sora's trust by telling this to All Might without his consent but he wanted to help All Might help Sora.
"I see... Don't worry Young Midoriya, I'll make sure to find more information on Young Higurashi's parents, I'll tell you if I find anything for now we focus on your training, Let's go." All Might said as he poofed back into his buff form as he got a nod in response from Midoriya.
After All Might finished training with Midoriya for today, He went straight to his agency as he calls someone on his phone, a few seconds later, someone picks up.
"Hello, All Might, What can I do for you?"
"Yes, Hello, Nezu, I need your assistance, I need information about two Heroes who've passed, It's important." All Might said as he reached the top floor, his office, He walked towards his desk and sat down.
"I see and what are these hero's names?"
"Their Hero names are Harmonic and Vocalist, please find any and all information on them" All Might said as he opened up his computer and started to access his hero database, trying to get any information he could right now.
"I'll see what I can do but I have to ask, Why do you suddenly want to see these two completely random heroes private information?"
"I want to save someone who talked some sense into the hero's who were at the sludge villain incident a few days ago, He's lost his smile and I want to save him like he did for me, His words were harsh but everything about being a real hero who never gives up even faced with an impossible challenge or a villain who has the advantage is a kind of hero who doesn't deserve to shed any tears" As All Might said this He immediately got basic information of Harmonic and Vocalist like their real names, age, race, quirks, familial relations, ect.
"I see.. Is this 'hero' the same one who was also at the sludge villain incident that had brown hair and a red streak?"
"Yes, he is, his name is Sora Higurashi, from what I've gathered, he's an orphan, no family left to live with so he lives at his old home, doing his best to balance his school life, personal life and part-time work life, He's a good kid and His quirk is similar to Present Mic's but a personality similar to Eraserhead's" All Might remembers how he saw the video from the Sludge Villain Incident of Sora using his quirk, It looked like Mic when he started his path as a hero.
"An orphan.. no family, huh.. I have an idea, since you seem to deeply care for this 'Sora Higurashi' how about we let Present Mic and Eraserhead take him in as their child, I say we let Present Mic and Eraserhead adopt this child, I'll talk to them and see if they'll agree to at least meet him"