26 episodesFirst aired 4 April 2002
Tsukasa wakes up inside The World, a massive online role-playing game full of magic and monsters, and finds himself unable to log out. With no knowledge of what’s happening in the real world, Tsukasa must discover how he ended up stuck in the game, and what connection he has with the fabled Key of the Twilight—an item that’s rumored to grant ultimate control over the digital realm.
E1Apr 200224m
Tsukasa is trapped in an MMORPG called The World. With his conscious inaccessible, Tsukasa attempts to find his purpose for being in the game.
E2Apr 200224m
Tsukasa’s inability to log out of the world worries Mimiru. The Crimson Knights, on the other hand, see Tsukasa as a threat.
E3Apr 200224m
BT and Sora suspect that Tsukasa is somehow connected to a very important artifact, the Key of the Twilight.
E4Apr 200224m
Tsukasa's rampaging Guardian monster wreaks havoc in The World, and an edict from Subaru makes him a wanted man.
E5May 200224m
Tsukasa finally tames his Guardian monster, but unbeknownst to him, someone is plotting his capture.
E6May 200224m
Subaru carefully observes Tsukasa, gradually getting to know him. Sora mounts a rescue mission.
E7May 200224m
Mimiru encounters a novice player and offers her guidance in The World. This new relationship helps Mimiru uncover her own motivation for playing.
E8May 200224m
Mimiru extends Tsukasa an invitation to meet; BT and Crim share an interesting encounter.
E9May 200224m
An elite hacker proves instrumental in the quest for the Key of the Twilight, and Tsukasa gets stuck with a sick Grunty.
E10Jun 200224m
Bear's shortcomings as a father may be the root of his concern for Tsukasa. Clues arise as the search for the Key of the Twilight continues.
E11Jun 200224m
Mimiru, Bear, and Tsukasa join forces before embarking on a non-fighting quest.
E12Jun 200224m
Tsukasa stumbles upon Aura, an advanced AI, that is being held captive.
E13Jun 200224m
A way to open the Twilight Eye is discovered, and the group decides to follow the new path unfolding before them.
E14Jul 200224m
After the Eye is opened, a secret area appears, complicating the group's search for the key.
E15Jul 200224m
Revisit all the major moments from this groundbreaking anime in a series of vivid flashbacks that may shed new light on past events!
E16Jul 200224m
Tsukasa logs back into The World, only to discover that he cannot die. Shocked, he turns to Subaru for answers.
E17Jul 200224m
Crim refuses to meet BT outside of the game. Later, Tsukasa mounts a rescue attempt – and secrets are revealed.
E18Aug 200224m
Silver Knight disrupts any and all potential rendezvous between Subaru and Tsukasa. Subaru ponders the future of the Crimson Knights.
E19Aug 200224m
Subaru drifts aimlessly through The World, reflecting on her past experiences. Her connection with Tsukasa grows even stronger after an unexpected attack.
E20Aug 200224m
Aura goes missing, Morganna attacks Tsukasa, and the search for the Key of the Twilight continues.
E21Aug 200224m
Tsukasa lingers in a catatonic state, and some immensely powerful monsters make their presence felt in The World.
E22Aug 200224m
Bear, Mimiru, and Subaru are attacked by yet another seemingly-unstoppable monster, but Balmung comes to the rescue.
E23Sept 200224m
Tsukasa is too frightened to pass through Helba's gate, and Crim explains Subaru's true life condition.
E24Sept 200224m
Upon arriving in Helba's realm – Net Slum – the group is forced to defend Subaru from an attack by Morganna.
E25Sept 200224m
As the battle intensifies, the group seeks shelter in the Cathedral. Morganna summons Guardians to do her bidding.
E26Sept 200224m
Drawing strength from Subaru, Tsukasa summons the courage to awaken Aura. Outside of The World, players share a true life encounter.