Pixel Wolves

A story about wolves in a pixel form. This is a book based off of SAO (Sword Art Online) but with some added features of other books and my own crafting. See if you can spot them, and please, message me, if at all possible, of what books/other forms of media I used. SAO is basically about Kirito and Asuna meeting, and they're both beta testers (aka Beaters). Kirito is a loner at first, then, before they meet for he first time, while beating the first boss, they party up. When Asuna leaves, right before she does, she looks back, saying, "Friend me, so I can come to your aid when you're in danger. . . ." (Or something to that extent).
Skip foreword a few episodes. Kirito joins a guild, named "Black Cats." They are all lower levels than him, and Kirito is able to hide his level somehow. He grows close to this one girl, who is young. He helps her through a lot of things.
Skip foreword a few mins/ep's. The girl goes missing, and Kirito finds her. She is scared that she'll die before the game is cleared. He promises her that she won't.
Skip to the first time they go into a room as a guild, not single units. It's a trapped room. Basically *sniffles* they all die, except for Kirito. The young girl gives him this crystal-message thingy. It's a crystal with a recording.
Please note: There will be mature language and scenes, along with the LGBT community (sorry if that offends you)!