Discussion

After they come back, All Might immediately said "So, how did this first experience go?"

After they went back to where everyone else was, they heard All Might saying how there is first experience in a hero activity, which ended poorly for them in a big ways as they couldn't do anything to Mio, her quirk was too strong and mysterious to them.

Seeing the four students in a bad shape, All Might immediately said in a encouraging tone "There is no harm in losing, no one is perfect and no one knows everything, for this reason, living is synonymous with growing, both physically and mentally."

"This may have been a hard lesson for your spirits, but I'm sure this defeat will have a positive effect on you."

Looking at Mio, he then approached her and whisper "You didn't give them a chance." to which she replied "I never gave them a chance in the beginning." All Might hearing this simply sighed at Mio's answer.

After this, All Might turned around and looked at the four students and said "So what do you think of this battle?" to which they replied at the same time "Painful" since each of them as pass a limit and are tired as hell.

After a few seconds, All Might look at the students who have not participated in a battle and said "Since she demonstrated the first fight, let's move on to the second round which is me."

At those words, the students have there color went away from their face, as they can't imagine them against All Might. Luckily, All Might simply laugh and said "Hahaha... I was just joking, you will face each other in a two against two battle, villains against heroes."

So, taking out the box containing the alphabet of the team, and carrying it forward, All Might continued "For this reason, you need to get your alphabet out now!" and with this, the battle went exactly as the anime, Shoto win with just one move and Izuku went to the infirmary, though Bakugo, Ilda and Ochako also went for a quick heal to the granny.

"Well, that's it for today! Good job all of you. For your first full training exercise, you all did wonderful! Now get changed and go back to your classroom." said All Might, without waiting, he ran away leaving behind a gust of wind as his time was almost up.

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To the infirmary

"It's been no time all since he entered and yet this is his third time here, All Might!!" said Recovery girl who is a granny.

All Might simply look down and apologize to her, which didn't end well for him and scolded All Might about his discipline.

Hearing her scold All Might for his discipline, Mio let out a little laugh outside of the infirmary. Once the lesson was over, Mio went to the infirmary since she got nothing to do and she know the next scene of the anime is here went Recovery girl tell All Might that Izuku need to control his power.

Hearing a little laugh, All Might and Recovery girl were surprised, immediately All Might began to sweat quite cold, after all, he talked to Recovery Girl about important and secret topics.

All Might without thinking twice immediately transform into his muscle form once the door opening, but seeing who was the person who entered the room, he immediately relax and return to his skinny form and said with a sigh of relief "Mio, you almost gave me a heart attack there."

While instead, Recovery Girl watching Mio enter, raised her eyebrows once she saw All Might deactivating his muscle form. She looked at him and ask "Does she know?"

Hearing her, All Might nodded and looked at Mio and said "Mio is the person who live with me and I trust her, she know my secret and my successor, so it's ok."

At the response, the granny nodded, and look at Mio who remained there in silent without them with a smile.