A/n : As per the votes I am making Yami x Mellisa and he will be a student. And Momo x Shoto.
-------------------------------------------------------------
Yami : Let's do this !
Izu and Kat : Yea !!
As they were walking the staff stopped them.
Staff : Sir you can't take weapons inside the building.
Yami : These are like support items.
Staff : Then you need permission Sir.
Yami : Where can I get the permission ?
Staff : Please take it at principal's office.
Yami then turns to Izuku and Katsuki and says that he will meet them in the exam and leaves to principal's office.
Yami : ' So I need to talk to Nezu '
Yami knocks the door and goes inside.
There were all the teachers and Small Might.
Yami : Yo !
Nezu : Yes what can do for you Mr. Midoriya ?
Yami : Cut the formalities we have met before Nezu.
Nezu : Well you are right there Yami.
Yami : Ya just so you know I want to take my katana inside. Well bye.
Nezu : Hahaha Still the same carefree guy.
After Yami leaves.
Aizawa : What was that Nezu ?
Nezu : Well let's just say that he is a friend but now a student ... a very strong student.
Midnight : And what do you mean by very strong Nezu ?
Nezu : Well he can take anybody in this room without activating his quirk and with quirk he can give All Might a run for his money.
All the teachers were shocked except All Might as he knows it's true.
Cementos : And what did he mean by you have met before.
Nezu : Oh that.. well you see I was very bored so I took a walk with All Might few days back
All Might : ' More like I was your taxi '
Nezu : And there was a huge explosion near the xxx beach, so we went there and found him. And when I asked what was he doing he said...
- FLASHBACK -
Yami : Ya I was trying a new attack which popped into my head.
All Might : Young Yami don't do reckless stuff here.
Nezu : You know him All Might.
Yami : Ya and by the looks of it even you know his limit, so All Might debuff and you must be Nezu the principal of UA.
Nezu : Well I am honoured that you know of me.
Yami : Ya ya, now what are you doing here ?
Nezu : Nothing we were taking a walk and we saw an explosion so we came to see what happened.
Yami : Yaaaa... you will not send me to authorities right.
Nezu : Not if you join UA
Yami : Ya me and his successor, my brother with our friend were going to compete in the entrance exam anyway so ya everything covered. Hahahahah!
Nezu : Thank you for your co-operation.
Yami : Now I will give you an advice as the beginning of our friendship, but it will be a clue and you need to include me in that, ok.
Nezu : Well let's here it.
Yami : There is something which is hidden by a Villain or a gang who are trying to make the world quirk free in the wrong way. And they have a young hostage with them to help them.
Nezu : So by a gang you can also mean an organisation and you saying young means the age of the hostage is the same or below you, more likely below and he/she is helping them means she has some type of quirk which can make someone quirkless if used correctly.
Yami : Well you are the most intelligent creature known. So ya this is all you get good bye. * dips *
All Might : He sure is an interesting and carefree guy.
Nezu : Well that is for sure and he didn't tell us everything as it will create a suspicion on him.
All Might : Nezu I know that kid, he may seem like he doesn't care or is laid back but he is one of the most hardworking kid I know.
Nezu : Well he did give us an advice, so we need to take him on an undercover mission. We need to contact every agency to look for this gang or organisation.
- FLASHBACK END -
-------------------------------------------------------------
This thing will happen before Sports Festival.