".hack//GIFT" is a short OVA (original video animation) set within the ".hack" multimedia franchise, which revolves around the fictional MMORPG "The World." The story takes place during a Christmas event within the game, where players gather to celebrate and exchange gifts. The narrative focuses on the interactions between several characters, primarily Tsukasa, a player trapped within the game, and Mimiru, a close friend who frequently assists him. Other notable characters include Bear, a veteran player and guild leader, and BT, a cheerful and energetic player.

The OVA is structured as a lighthearted, comedic side story that contrasts with the darker, more serious tone of the main ".hack//SIGN" series. It explores the camaraderie and friendships formed within the virtual world, emphasizing the festive atmosphere of the in-game event. Players participate in various activities, such as decorating a Christmas tree and exchanging presents, which serve as a backdrop for character-driven moments and humorous exchanges. The interactions highlight the personalities of the characters, with Tsukasa’s reserved nature juxtaposed against Mimiru’s outgoing demeanor and BT’s playful antics.

The plot is minimal, focusing more on slice-of-life moments rather than advancing the overarching narrative of the ".hack" series. It provides a glimpse into the lighter side of "The World," showcasing how players bond and create memories within the game. The OVA also includes references to other characters and events from the franchise, offering fans a deeper connection to the broader ".hack" universe. Overall, ".hack//GIFT" serves as a festive, character-centric addition to the series, emphasizing the social and communal aspects of the virtual world.