After winning the coveted avatars 'Kite' and 'Black Rose' in an event organized by the developers of the MMORPG 'The World,' siblings Shugo and Rena venture into the virtual realm. Teaming up with fellow players Ouka, Mirelle, Hotaru, and Sanjuro, they embark on quests and challenges. However, their adventures take a dark turn when enigmatic creatures emerge, causing real-world comas upon in-game deaths. As the chosen ones, Shugo and Rena hold the key to unraveling this mystery. Yet, as they delve deeper, they realize they are the prime targets of a sinister plot, uncovering hidden truths within the game's depths.