~Flashback~
3rd person POV

Deep within a forest, a dark castle was in total chaos. Everyone were running around screaming, striving for survival. Some are monsters, some are dark fairies, some are ghosts, some are vampires, and some are vicious beasts. Loud crackling and blazing sounds of burning walls and woods surrounded the castle and in it stayed one thing. It slayed, punished, took everything those things took with evil intent. Brought back to them everything they did that has a connection with the devils. It let them have the suffering and torture they deserve. It was that thing that was good but yet was also evil. It was none other than...

The Grim Reaper

~Back to Present~
Aizawa's POV

"Ash?" He was there running straight ahead to (l/n). Fighting back every wind and every thing that hits him. But there's something going on. It was getting colder by the second again and getting darker. Black and blue aura surrounded Ash as he fought back and does his hardest to reach (l/n). His feet leaving temporary blue footprints that disappear in mere seconds. His clothes changed to one of teared up and looked like overused cloaks but has a crown like top. His eyes... Turned icy blue...

Ash's POV

'Cold... So cold... It's been so long since I've been in this form... It was only now  that I needed it again... I can't fight off these flying objects and strong currents without anything to use with my true powers locked within that thing... What should I use? *Gasp* My scythe... But should I take the risks? No, I need to save her first... '

I stopped where I was standing and used every ounce of strength I have to stand still.

"Blessed by the heavens above, forged by the demon elves, destroyer of everything, the blade that cuts through anything, come forth...

SCYTHE OF DEATH!!"

Bright blue light appeared in front of me and as it disappeared, there floated the once scythe I used to clear every sin in this world. The very scythe that was cursed in my blood. The very scythe that I hated for a very long time. The very scythe that hurt the only thing I treasured the most...

3rd Person POV

As he took on his full form (picture above) he now walked straight confidently and without hardships to (y/n). Slashing everything that comes at him, his face hidden from the hood. But when everyone tried their hardest to look, only Izuku had a clear view and he was frightened as soon as he saw it. It was nothing but a skull. He also observed that the guy's fingers elongated and turned into bones. It almost looked like death. But little did they know that it was really death that stood in front of them saving their classmate in a complete chaos.

(y/n)'s POV

'Where am I? What's happening out there? It's so cold... Someone help me... Someone please help me...'

Then a dark low voice was heard...

"(y/n)..."

"Wh-who's there?"

"Don't be afraid..."

"Who are you?"

"It's me, Ash..."

"Ash? What are you doing here?"

"Fulfilling the promise I made..."

Then a bright light blinded my vision then all turned black...

Ash's POV

"All is done..."

After I slashed through the massive air barrier around (y/n), it released a very strong air current. It almost blew me away. Then when everything cleared up, there was (y/n) floating in the air. In just a second, she started to fall so I teleported underneath her to catch her quickly.

"(Y/N)!!! WHERE IS SHE??!!" I turned around to the owner voice while carrying an unconscious (y/n). With my dark voice I exclaimed...

"You're late." It was All Might. When he saw me carrying her, he hurried and looked at her condition with creased eyebrows.

"Did she finally let it go?" He asked like as if she would never let her powers go out.

"Yes, and I want full details about how this happened. Care to tell Mr. Aizawa?" I faced Aizawa while talking.

He started walking towards us so as (y/n)'s classmates I guess.

"Yes, but could you have your human form first before discussing what happened?" He pointed out while pointing at me and looking at me from head to toe.

"Of course but I'll take her back home first." I said and looked at my lady's peaceful angelic face.

"Sure, sure, no problem." Then in a flash, I teleported back home.

3rd person POV

"Class you should all head home. I'll dismiss early today. We'll not discuss this to anyone understood?" Aizawa-sensei ordered to the students.

"Yes, sensei." They all replied and one by one left while gossiping and whispering to each other leaving All Might and Aizawa alone together.

"What did you do Eraserhead?" All Might asked while looking at the leaving students.

"I may have snapped something inside her that made her release that so much magic power. It's so massive. Her quirk or quirks is really amazing." He said plainly.

"But you shouldn't have done that with students around you two. The students might get harmed anytime."

"Don't worry this won't happen again besides she now unlocked her true powers. It'll only take time for her body and self to adjust. I know she'll have complete control of it over a matter of time." Aizawa explained.

"Of course, but since her quirks are unlocked, we, teachers, should be more observant and be more careful to (y/n). She still needs guidance and protection. We should also always keep our guards up whenever she's around, villains might have their eyes on her now after what happened a while ago. It must have peaked their interest, they must have sensed it too." All might replied.

"Sure, we'll get the chance to talk about this to the teachers tomorrow. Let's take a rest for now."

"Understood."

~Somewhere out there~

"Hohoho, that's an amazing quirk for someone to have. I think that person will be of use in our league don't yah think?"

"Of course, I bet our boss already had his eyes to the person who wields that quirk."

"Then it's all set now! Isn't it? We'll have that person then we'll win!"

"But I think the journey to get that person will be harder than it looks."

"Oohhh that's fine, it'll just take time until I get my hands on to that person. Just wait and see."

"I'll be coming for you"