Izuku walked inside the large room, almost all of U.A teachers were there, Izuku couldn't stop himself to feel a little intimidated by so many pro heroes gathered just for his quirk evaluation
So you are Izuku Midoriya, i've heard a lot about you - Said Nezu
Only good things i hope - Said Izuku with a smile
Izuku, how do you describe your quick? - Said Nezu, cutting to the chase
Izuku had thought a lot about how to present his spiritual power as a quirk and make it believable, the best solution was to claim he could gather and manipulate energy from the reality, what was not exactly a lie, this way he could freely use Kido (Shinigami Spells) without raising to much suspicion,
I'm still learning how it works since it has awakened just a few days ago, but it seens i can sense, gather and manipulate energy present in the ether - Said Izuku
Nezu smiled and looked back at the other teachers, his theory was correct as far as he knew
I see, it seens you have some kind of access to zero-point energy, i'll spare you the scientific details for now, but you have a very special quirk - Said Nezu
Izuku was confused, for he had never heard of such thing as zero-point energy in both of his lifes, but it seens it will work as intended.
Now Izuku Midoriya, would you be so kind to show us what you can do? - Said Nezu pointing to Ectoplasm
The hero ectoplasm created many clones of himself and said.
You are free to attack my clone as you wish, they are just a extention of myself, they will disappear after being hit with a strong attack, you can attack with everything you have. - said Ectoplasm
Izuku smiled
Izuku raised his arm in the direction of the clones and suddenly a sword warped to Izuku's hand
Midnight, All Might and Aizawa were left in shock, they remembered that the slime villains body was found in pieces, like if someone with a knife cut him into pieces.
They now knew for sure that Izuku was the killer, but him having a sword is not enough evidence to bring Izuku to justice.
Suddenly Izuku with an amazing speed decapitaded one of Ectoplasm's clones with a single swing of his sword.
All the pro heroes, expect Nezu, felt a chill on their spine, Aizawa that was familiar to fighting against sword-users was impressed with Izuku's swordmanship
Izuku retreated back to where he summoned his sword, but this time made it vanish and lifted a finger and said
Bakudou 61: Rikujou Kourou (Bar Seal)
Six pillars of light emerged from the ground and in less than one second shot themselves into one of clones, completely immobilizing him with what i looked like a ring of light.
Four clones left, next Izuku used:
Bakudou 63: Sajo Sabaku (Binding Chains)
A chain made of light formed above the clone and wrapped around him with an amazing speed that left most of the heroes present unsure if they would be able to escape the chain before it grabbed you if it was used on them

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Aizen Rebirth (My Hero Academia x Bleach)
FanfictionAizen is being held in Muken prison for over a century now, but he uses the contingency plan he had made in case escape was deemed impossible, he sent his soul to another universe to be reborn and eventually regain his memory and powers. During a at...