Movie
Description
Tomo Hosaka, trapped in Sword Art Online and operating under the alias Argo, functions as an information broker and courier. Her beta test experience provides crucial knowledge for her trade. Curly golden-brown hair and distinctive artificial whisker markings on her cheeks define her appearance; these originated from a failed "Martial Arts" Extra Skill quest attempt during the beta, resulting in a temporary mark she later reapplied as makeup. This signature feature earned her the nickname "Argo the Rat." She typically wears full-body cloth and leather armor with a hooded cloak, carrying claws at her left waist and throwing picks at her right waist.

Argo buys and sells valuable information, including quest details, player locations, rare items, and insights into other players' activities or relationships. While attaching prices to most intelligence, she adheres to principles: she refuses to disclose fellow beta tester identities to protect them and honors personal debts, like when Kirito helps her evade aggressive players. Her relentless pursuit of comprehensive field guides for her business sometimes leads her into danger.

A significant activity involves authoring and freely distributing strategy guides for new players. Placed in NPC shops across game towns, these guides contain critical survival information like safe hunting grounds, monster behaviors, and floor layouts. Argo funds their creation and distribution using profits from selling specialized intelligence to high-level Clearers, contrasting with her profit-driven persona by aiding the player base's survival.

Throughout the Aincrad Arc, Argo frequently interacts with key players like Kirito and Asuna, providing critical intelligence on Floor Boss mechanics, hidden quests, or player movements. She alerts Kirito about suspicious activities within the Dragon Knights Brigade and supplies maps for newly discovered quests. She also acts as a messenger. Her involvement extends to major events, such as scouting the fifth-floor boss chamber alongside Kirito during the Scherzo of Deep Night storyline and helping coordinate raid strategy, where her knowledge proves vital against unexpected boss abilities.

Argo observes and subtly influences player interpersonal dynamics, particularly noting the relationship between Kirito and Asuna. She teases Asuna about her interactions with Kirito and strategically shares information to create collaboration opportunities, highlighting her perceptiveness regarding social connections.

After Sword Art Online concludes, she enrolls at a high school in Kanagawa prefecture before transferring to a specialized school for SAO survivors. She later works as a writer and researcher for *MMO Today*.