Shugo, Ouka, Hotaru and Mireille start the search for Rena in "The World". After receiving a mail from an unknown sender they stumble across a hot spring in an unknown area. Upon entering the hot spring they find it is all an illusion and Shugo uses his "Data Drain" to defeat a monster.
Set in a fictional MMORPG, The World, the series focuses on twins Rena and Shugo, who receive chibi avatars in the design of the legendary .hackers known as Kite and BlackRose. After Shugo is given the Twilight Bracelet by a mysterious girl, the two embark on a quest to find Aura and unravel the mystery of the Twilight Bracelet.