Extend the Story - Add a Room

It was a beautiful day outside. Birds were singing, flowers were-

Our story begins in a quiet library in the middle of an unknown town in Japan, where our protagonist is quietly reading a book. This boy has black hair and green eyes, almost emeralds. His clothes are rather plain, just a track jacket in his favorite color, green, and he has some rather aweful taste in footware.
Narfumi Aquatani is his name, and he is known for being a very kind, optimistic boy. For now, we will call him Narf because Narfumi is far too ridiculous of a name.
*Crunch Crunch* "What is this-" *SLUURRRP* "-book?" Narf asked between sips of his mountain dew and a mouthful of Dorito dust.
On a table sat a book that said 'If you read this, you get a Harem.'

Narf looked around the room to see if anyone was looking before slowly sliding the book over.

Narf quietly opened the book. It only contained one word.
"But..."
Narfumi began to glow. "God Farking Damnit!"

A moment later, the room was silent.

...

Narf opened his eyes in a daze, glancing around the room. A man in robes seemed to be standing ahead, and aside him were 4 others, all seeming high schoolers, probably Japanese. Probably.
The Robed man spoke up. "Excellent, Truly Excellent, you are all finally awake! The ritual was a success and now you are here! Welcome to the world of Sword Art Online!"

"FUCK!" One of the Teenagers shouts.
"Ugggggggg, can we like, go to ANY other Game world?"
"Now Now, I'm sure this isn't Sword Art Season 1. This is more like Alicization, right? ... Right?"

As everyone complained, you decided to look at your right hand. It seemed to be holding a weird glowy thing.

In your hand was a...

(Note, gun is the only choice for now, until someone adds their own path.)

Rock