Secret Ending: Otherworld [abyssal]

A young lady in her late teens saunters through dark, rainy streets in the dead of night. She wears a blue hooded jacket, which seems a little baggy for someone of her size, and some black jeans. There's a distinct cowlick sticking out from her hime-cut black hair and deep red eyes that keep looking forward. Resting on one shoulder is a wooden shinai, while the other hand is nestled in her pockets. Not a soul greets her, but she continues her journey anyways.
***The silence of eternity***
All around her, buildings of various sizes tower over her, and she stops in a plaza, right in front of a set of plaza stairs leading up to an imposingly tall skyscraper whose glass doors are locked. The girl nonchalantly looks up to see that the moon is actually an eye that looks back at her.
***"We've all left something behind."***
The girl is now falling from the sky upside-down, still looking at the moon, her arms loosely by her sides.
***A world without self***
The girl, now standing on the ground, looks around her to see swarms of grotesque, misshapen humanoid forms made of a unidentifiable black mass claw their way out from puddles of rainwater.
***Sin heart***
***Devoid of meaning***
***Hopeless***
She fights the monsters, easily slicing through two in quick succession, then spinning around to finish off a third. More monsters gather around the girl. She turns around to see a young man with pale skin running at her from the side, drawing his fist back as he approaches, crystals forming up around his body and then breaking off to reveal glowing red and gold armour underneath. The girl squints, and then runs at him, readying her sword.
***What is, now is not***
Time seems to slow as the two pass by each other, and then time speeds back up when they separate. A glimpse of their Spirit Crests are seen at this time- On the nape of girl's neck are a pair of bat wings made of several swords, while the boy has
***"I don't want to be what's left behind."***
The girl unleashes a powerful vertical upwards slash, followed by a horizontal cut as she runs through a crowd of monsters, hacking and slashing her way through them.
***"No one is promised tomorrow."***
Meanwhile, the boy collides his fist into one monster, the sheer impact shown rippling through his body and also blowing the other monsters back from the ensuing shockwave.
The two continue destroying the monsters. However, they soon stop to look up at the top of the skyscraper from before, where a much taller hooded figure in black stands, raising his hands into the air.
***Those who fight...***
Behind the hooded figure, a red glowing eye reminiscent of the moon appears.
***"Is your cause your own?"***
Saato, Leen, and Yuugure (& Shigure) all stand at a crossroads in a grassy meadow at night, their backs facing each other but each facing a different path.
***What will remain?***
The two kick and punch aside the monsters in their way before jumping onto and running up the side of the skyscraper, slaying the monsters that emerge in their way effortlessly.
***The memories that have been, will be***
The boy goes in for a haymaker on the hooded figure, while the girl attempts a downward cleave. The hooded figure manages to hold off both attacks simultaneously with his bare hands, multiple red eyes forming along his black jacket.
***The neverending end begins...***
Suzuki Asuka lands on the ground in front of the skyscraper. She's wearing a black hooded jacket that covers much of her body. Her red eye gleams.
***KAMIGAKARI***