Howdy so this was made to show off the old domain expansion from the original Version of the story and yadda yadda and our test subject is gonna be

*Insert drumroll*

MAAAAHHAAAAROOOGAAAA!!

(I took this from you, she aint in the revised version. . Maybe I'll bring her back)
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In shibuya heavy breathing could be heard.  Y/n panted shoulders heaving as he was approached by a tall woman.

She had otherworldly pale skin and a muscular build. She wore white robes that were ripped and tattered. Her breasts were simply exposed bouncing slightly with her every step.

Over her eyes she wore bandage's that seemed to blind her. Long white hair splayed down her shoulders, angel like wings poked out her head as a golden eight pointed wheel spun on her head.

Y/n: Sh-Shit. .

A boom was heard and Mahoraga slammed her fist into Y/n's skull launching him across the street making him roll across the pavement creating a trench that uprooted earth.

Springing to his feet Y/n barely avoided the stab of a blade shooting out her forearm aimed to take off his head.

The tall shikigami lost it's arms as Y/n ripped his sword off his back and took off it's arms with a slash.

Y/n breathed in and raised his hands pressing them together rubbing them together sideways.

Y/n: Domain expansion. . . . Willful establishment. .

A sphere formed around the two of them.

Y/n ran his hands through his hair as he watched mahoraga approach as her tits bounced slightly with her every step.

Whistling could be suddenly heard and a sudden rush of air as their surroundings changed and the two of them were falling upwards into the sky.

Thunder rumbled when Y/n fell into a storm cloud as lightning flashed, a bolt of lightning shot into his hand while he twisted his body in the sky.

Mahoraga came rocketing towards him with a stab from her arm blade only for the lightning to be stabbed through her stomach and explode clouding her in smoke.

Y/n vanished and reappeared on the ground huffing slightly, his eyes focused on the sky and he raised his left arm up before ripping it down.

An explosion occured behind him as mahoraga slammed into the ground.

Fissures opened in the ground and mahoraga released an audible grunt as she was forced into a kneeling position from the increase of gravity slamming into her shoulders.

Y/n made a finger gun aiming it at her creating a small ball of fire on the tip of his finger before it was released into a blast that swallowed the shikigami whole.

(That's all i just wanted to show a little of what this domains expansion could do. It wasn't really supposed to be a fight but more or less a demonstration. I could have explained it but i wanted to show it.)