After all of humanity witnessed the cruel actions of God's treasonous Exorcist army and now know that Adam, Leader of the Exorcist army and first human man, was, in reality, a genocidal monster that is FAR WORSE than Hitler or any psychotic maniac in history, they began to DESPISE the Exorcist angels and wanted justice & punishment to be rained down upon them by God

Speaking of God, he punished his entire army by banning them from entering heaven.... FOR GOOD!!! And instead of them staying in Hell as their punishment, Aiden suggested that they should be sent to Earth instead, where Humanity will punish the Exorcist in their OWN ways, which made God smile at knowing that it's a good idea and knows that they deserve having that kind of punishment

Now the Exorcist angels are now shunned by humans & Faunas alike as they bully them, spit on their faces, throwing drinks, food, garbage, etc...

In Heaven, Sera was executed by God's royal guard for basically committing the crime of treason while Emily looked away to avoid seeing her own sister getting beheaded and to avoid being haunted by seeing it for the rest of her life

Heck, even gangs of humans and faunas just beat them up inhumanely with bats, wood planks, etc.... but as for Lute and a certain amount of Exorcist angels, they just work at UNION ACADEMY as nothing but Janitors with poor payment and treatment by the students & staff at the academy

Lute then dropped onto her knees and started to sob

Lute: This is the worst day of my life!!

(ATLAS)

In an atlas flagship, we see that General Ironwood and the flagship's officers are doing their jobs watching over the city of Atlas and to make sure no one invades the city, despite there being a storm heading towards the city

Ironwood: hmm, Winter, what do you got?

Winter: someone or something has sabotaged our new skyline defense systems....and our Comms have been spotty for last few hours.

Ironwood then focused on the storm outside of the flagship

Ironwood: wait a minute? (looks at Winter) what are our new Orbital Satellites telling us?

Winter pulled out her scroll to check, but instead she got a bad answer when checking the satellites' status

Winter: Nothing.

Then an officer spoke up with a smile

Officer: so, is that good?

Winter: No. I mean they're not there. Our Satellites have gone dark too!!

Ironwood & the rest of the flagship's personnel in the command bridge became shocked and silent after hearing what Winter said, then as Ironwood stared through the windows with a stern look in his eyes.... The Red Legion had arrived

Ironwood: (wide eyes) By the Gods.

Then the Red Legion began their attack on the Atlas Fleet by shooting a whole barrage of missiles at many of the flagships, damaging or destroying them entirely. But many of the Atlas fighters launched from surviving flagships and began to defend atlas and fight back against the Red Legion....But soon, everyone on Earth, Heaven, Hell, and UNION ACADEMY will face against the monster tyrant of the Red Legion, Dominus Ghaul

(AT UNION ACADEMY)

We see Aiden, who's holding hands with Eri, walking down the halls while everyone of the students congratulated him for exposing Adam & the Exorcists to all of Heaven & Humanity, knowing that they deserved the punishments they all got since they were exiled to Earth

Then as he entered the cafeteria, he was met with a lot of cheers by the students eating lunch, including his friends & Union Harem, which made Aiden smile, then turned his head at seeing Adam (aka: DickMaster) in the kitchen because that was his punishment given by Union Academy... to become their dish cleaner and was not allowed to eat any ribs, EVER!!!

Adam: (grumbles in anger) ...

Aiden: (chuckles) so guys, what did you do to our new fallen exorcist staff after they arrived?

Bakugo: (Laughs) despite them being women, I just punched a group of them in the face as payback for all the crimes they've done. I think I even broke some of their teeth out in the process, (chuckles).

Erza: (glares) I put Lute in her place for what she's done.

Aiden smiled mischievously and in happiness after knowing that from Bakugo & Erza, or at least he was smiling until everyone in the cafeteria felt a big rumble that shook the academy and made Adam drop a stack of glass plates and screamed in frustration

Adam: AW, COME ON!!!

Then a balloon filled with blue & red paint hit his face

Everyone ignored that and soon turned to the cafeteria windows, where they widened their eyes and covered their mouths in shock at seeing that an invasion force of Red Legion ships arrived

Gray: what... the... hell?

Gajeel: WHAT THE HECK!! WHO ARE THESE GUYS!!!???

And then...Aiden spoke up with a tone filled with fear

Aiden: it can't be.

Everyone turned to Aiden with wide eyes and see Aiden, who had a look of total fear and obviously knows who's attacking UNION ACADEMY right now

Natsu: Wait, you know who these guys attacking us are!!?

Aiden: (in fear) yes, I do. And they're not guys, they're aliens from a video game franchise called ''Destiny''. The aliens attacking us are a race called the Cabal and these Cabal call themselves ''The Red Legion', led by an immortality obsessed nightmare of a tyrant named Dominus Ghaul.

Mina Ashido: What else do you know about this Ghaul?

Aiden: well, it's a long story but the short version is that he's a tyrannical warmonger that is obsessed with gaining absolute power and immortality. Heck, even in the ending of the game, Destiny 2, he finally achieved immortality and entitled himself as a God until an orb shaped deity of light called The Traveler awoke and destroyed Ghaul completely and saved earth in the game.

Everyone: WHAT!!??

Then they heard an explosion coming from the kingdom of Vale

Asuka: Why didn't you tell us about this guy!!??

Aiden: (shrugs) none of you ever asked about it after I came here.... at all.

.

.

.

.

.

Mineta: He does have a good point.

Katsuragi: yeah, it is true. We never did ask about it.

Even her teammates and everyone else agreed in their own ways in knowing that it is true about them not asking Aiden about the Destiny game franchise, until....

Elfman: Wait a minute, how did the Red Legion even get here?!

Everyone widened their eyes in realizing that, but then suddenly a student from Class 1B barged through the doors, along with the rest of the class as well and all the Union Students too

Union Student 1 (cat Faunus girl): WE HAVE TO GET OUT OF HERE RIGHT NOW!!!

Union Student 2 (human guy): THOSE ALIENS HAVE BROKE INTO THE ACADEMY!!!

Aiden looked at Eri, who looked really scared right now and then he looked at his UNION GFs and sighed

Aiden: Yang, I want you and the others to take Eri and protect her.

Aiden's UNION GFs: WHAT!!?

Eri looked at her adoptive teen dad as she started to tear up in her eyes

Eri: daddy?

Aiden knelt down to Eri and kissed her forehead and looked into her adorable eyes

Aiden: don't worry about daddy, I'll come back for you. I promise.

He and Eri tightly hug and then Aiden picked her up and handed her over to Yang & the group in the lunchroom, then they all heard Cabal chatter in the distance from the cafeteria and all stare at Aiden

Aiden: GET OUT OF HERE, I'LL BUY YOU SOME TIME!!!

They all nod and leave through the cafeteria's exit door, except Adam because his leg is chained onto the floor as punishment for his many crimes and is seen pleading to Aiden from his spot in the kitchen

Adam: PLEASE, AIDEN, YOU GOTTA GET ME OUT OF HERE!!!

Aiden: (stern eyes) and risk you and all the exorcist angels to exterminate humanity for punishing y'all? No thanks.

He then ran out through the cafeteria's entrance doors and started fighting against the Red Legion invaders, leaving Adam behind so he can finally die by the Red Legion once they get in here somehow

(French Voice: Later)

After Aiden arrived on Ghaul's command ship, he is now seen on top of the ship and sees the whole maniacal chaos that's happening in the Kingdom of Vale

Aiden: Oh my God, how am I supposed to save all of this?

And then...

???: you're not.

Aiden turned around and widened his eyes fearfully at seeing Dominus Ghaul in front of him

along with two Red Legion soldiers and members of the L.O.V. (League of Villains) and their allies such as Toga, Adam Tauras, Cinder Fall, Homura (Senran Kagura) and lastly, much to Aiden's horror, Shigaraki (that creepy, heartless monster)

Ghaul: Aiden October, we finally meet at last.

he said with an evil smile under his mask