*opening music*
As the music begins, we see the title "The Delusional Devil" show up in front of the broken moon, as it zoom down to show the Occult Research Clubroom.
La-la-la-la Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti Ba-ba-ri-as-ras-ti-ti-ta Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti Rastis! Rastis! Ra-ti-ti-la
The camera then quickly zooms in, and we see the events, starting with Y/n's childhood, him becoming a devil, Y/n getting betrayed, then it goes to Issei becoming a devil, Asia dying, Loki fighting the Student Council and ORC, and Rias being kidnapped, leading to Uzume looking right at Y/n with both of them having a determined look in their eyes.
Let's start a new life from the darkness Until the light reveals the end
We see the Three factions looking at a rift, which goes into Zero Dimension, and then into Heart Dimension, and then back to Earth in an unknown area.
Sinister faces, growing curses
It's show Y/n's new base of operations, as it shows his allies, and it then goes right to him.
This is my last war
The camera then zooms to Y/n's mouth, as his mouth repeats the lyrics above.
La-la-la-la Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti (Angels playing disguised)
We see the Devil Faction marching through the Underworld, preparing for the war that is to come.
Ba-ba-ri-as-ras-ti-ti-ta (With devil's faces)
It changes to the Angels and Fallen Angels, with Michael and Azazel flying, with Azazel having a determined look, while Michael has a sadden look on his face.
Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti (Children cling to their coins)
We now see many magic circles appearing from out of the sky, as the sky turns a dark blue.
Rastis! Rastis! Ra-ti-ti (Squeezing out their wisdom)
All of Y/n's creations start to come out of the circles, as every face in the world is shown, ready to fight off this foe.
La-la-la-la Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti (Angels planning disguised)
We see Rias and her Peerage fighting off the delusional beasts that Y/n created, as Uzume breaks through.
Ba-ba-ri-as-ras-ti-ti-ta (Rastis! Rastis!)
(With devil's faces)
The scene then changes to show Y/n mowing down Devils, Angels, Fallen Angels, Valkyries, and Humans as he notices Uzume rushing towards him, and he starts running towards her.
Ba-ba-ri-as-ras-ti-ti-ti-ras-ti-ti
(Children cling on to their)
We see Uzume and Y/n running through the carnage on their sides, and as they get close to clashing.
Rastis! Rastis! Ra-ti-ti-la
(Very last coins)
As time slows down, they face each other, ready for the final battle between them, which will decide the fate of humanity and the Supernatural world.
Destruction and regeneration
The Screen then changes, and we now see the destruction of a building, and then followed by a bright green glow.
You are the real enemy
(Rastis! Rastis! Rastis!)
We now see Y/n and Uzume staring down at each other, with Uzume's wristwatch starting to glow a bright blue.
War!
We see the entire world, completely destroyed, with Grimm Force at the top of it all.
(My) War!
We now see a giant crystal being broken, with Uzume fading away like dust.
(My) War!
We now see Y/n, who appears to be unconscious, falling to the ground, with him also fading into dust.
Rastis! Rastis! Rastis! Rastis!
We see an unknown forest, and with every Rastis, it goes through a dark cave, with a dark blue crystal being shown.
On the last Rastis, a young girl is seen walking towards it with a more tiny version of the same crystal in her hands.