An incredibly athletic older brother, Tenryu Taiga. A programming genius girl, Tenryu Fuyuki. The two siblings separated for eight years ended up living under one roof again after facing the problem – a lack of funds for living expenses.... more>>

Fuyuki proposes a way to earn money, a core system deeply involved in people’s daily lives, a game that awards you money as a prize for defeating malicious bugs in cyber world, the 《Aries》structure. Taiga after becoming a warrior in the game relying on his inborn senses, is puzzled by the unfamiliar sensation.

One day Saionji Rui, Fuyuki’s best friend appears and is attacked by a mysterious bug― “I’ll be waiting, my prince.”. Hybrid fantasy battle of cheating siblings begins here! <<less

AI buster, the prequel to .hack//SIGN, is the story of Albireo,a debugger, who used to play ‘Fragments,’ the beta version of ‘The World.’ Albireo encounters... more>> Lycoris, whom he assumes is an event NPC (an AI character) but she’s actually a failed version of Aura. She is blind, deaf, and mute, because Albireo debugged her and broke up important files. The missing files are hidden as items in the World, and when returned to Lycoris, she gets a function back. When she gains them all, she changes into a teenage form with purple hair who looks like Aura. Because of his acquaintance with Lycoris, Albireo cannot log out of the game and exit the World. <<less

The story takes place in the near future. Money (Game) Master is the world's biggest VR online game. It is an open world game with no levels and no quests, the only goal for players (known as Dealers) is to make money. All sorts of illegal actions like violence and theft are allowed in the pursuit of Snow, the game's virtual currency. Due to the game's massive popularity, Snow has a significant influence in the real world, thus making the game's conflicts part of the global economy. Each Dealer is partnered with a Magisterus, a female support AI modelled after a supernatural creature, which acts as their guide and support.... more>>

Kaname Suou, the main protagonist is a famous Dealer, with a succubus-type Magisterus is called Tselika. Formerly part of a famous team known as Called Game, Kaname undertakes a mission involving the Inheritance, a set of cheat weapons created by a Dealer known as Criminal AO that can break the game's balance, and with it, the world's economy. <<less

The fabulously wealthy heir to the Tsuwabuki Concern, Ichiro Tsuwabuki, has arrived inside the next generation virtual reality MMO, Narrow Fantasy Online. His cousin Asuha... more>> has asked for his help in finding someone inside the game, and he's come to help her out. Of course, while he's happy enough to help his cousin out, Ichiro also cannot be satisfied with anything but total mastery of whatever he tries. He quickly proceeds to dominate the game world using his natural genius... and his wallet! <<less