The Tutorial Episode

                                    

                                          

Game
Thoughts
"Talking"
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A tall, lanky man with a muscular build lay on the floor of a pitch-black room. He wore a black T-shirt that clung tightly to his defined upper body, and gray sweatpants.
"Ugh... Did I drink too much last night?" Azuma groaned, his head aching as he rolled over, a drop of water plopping onto his head, "The fuck is going on..."
He opened his eyes. Then he opened them again. And again. It wasn't until the fourth time trying to open his eyes that he realized that his eyes were already open. 
"Did the power go out? Why's it so dark..." He glanced around - or, would've glanced around if it wasn't pitch black.
"Chiho? You home?" Azuma called out for his younger sister, pushing himself up into a sitting position on the hard, damp floor. As he felt around, his hand brushed against something rough.
Is this... rocks?
He brushed his hand back and forth, feeling small grains crumble away from the solid ground. He flinched as another drop of water dripped from the ceiling, landing on his head.
"Okay... Either I'm way too hungover, or this isn't my room," Azuma concluded, "Did I get kidnapped or somethin'? Where the hell am I?"
[Welcome to your Dungeon, Dungeon Master!]
"The fuck?" Azuma said out loud, blinking as a bright red light assaulted his eyes. A large graphic box was floating in front of him, a red light exuding from it and shining a dim light onto his surroundings. Azuma looked around, seeing that he was in a small room with a rocky floor and a ceiling full of stalactites. Drops of water were dripping occasionally from the hanging objects, and a few feet in every direction of him were smooth walls.
Those walls are absurdly smooth for a cave.
He glanced at a puddle a few feet away and caught his reflection—a handsome face with a mop of messy black hair and high cheekbones.
Hi, me. Azuma thought idly before he snapped his attention back to the floating box.
"Dungeon Master?" He said out loud, poking his finger forward into the floating box. The box vanished, dumping Azuma back into darkness for a second before another one appeared. 
[You have been chosen for the Game of Dungeons: DxD Edition, Dungeon Master!]
"DxD?" Azuma asked, "Like, High School DxD?"
He received no response - just a text box staring back at him.
Never heard of another DxD before, so it's gotta be that one.
"Yo, fucking floating box," Azuma said, jutting his finger into the box, which resulted in his finger pushing through it as if it were intangible, "This is cool and all, but I'm good. I'm about to graduate from University, and I didn't waste four years of my life to sit in a dirty ass cave. Just pick someone else."
The box disappeared for a moment, and a new one appeared.
[Please choose your Dungeon Attendant, Dungeon Master!]
"Did you not hear me, shitter?" Azuma shoved his finger into the box again, his face being washed with annoyance, "I don't wanna sit in this fucking caveI was on track to be a pro volleyball player, y'know? Do you know how much pussy those guys get? A lot! So, send me back!"