This is a fantasy anime based around the .hack// series, about a game called The World.
Shugo and Rena win a character competition and inherit the Player character models of Kite and Blackrose the 2 legendary dothackers from the PS2 games, they both live apart from one another in the real world, and Rena encourages her brother to join the world, which he does, and this in turn becomes their way of talking to each other.
The anime has a light hearted feel in this volume and is more a fantasy series with swords, magic, monsters etc, nothing too graphic and is kinda fun.
This volume introduces the various personalitys in the world, including an offline friend of Shugos, and various characters from the games.
Now you honestly dont need to play the games to enjoy this series, its a plus but not a requirement.
It contains English/Japanese audio + Subtitles.
Very fun, and for ages 12+