ロックマンエグゼ Stream [ストリーム] (Japanese)
Age rating: Older Children (May contain mild bad language, bloodless violence)
Duo, a Net-Navi from outer-space, appears on earth one day and deems the planet too dangerous to be allowed to exist. Covering the world in a digital field, Duo is able to summon viruses and monsters to attack the citizens of earth. Net, Rockman, and other Net-Battlers are the only thing standing in the way of Duo's goal.
Following the battle against the Darkloids, the Earth has gained significant attention from Duo, an intergalactic judge of planets. Deeming Earth too dangerous to exist, he begins an erasure on the planet. However, the bond of humans and Net Navis through Cross Fusion piques his interest, and he spares Earth temporarily to prove itself worthy of existence. Netto finds himself marked with the Crest of Duo, a mark indicating his strong synchronization with his Net Navi. He sets out to find other bearers of the mark in order to overcome Duo and rescue the Earth from destruction. However, Duo does not plan to make it easy. His servent Slur begins giving Asteroid Net Navis to troubled humans in order to test their morality, causing a group of them to band together and form a new World Three. And not all has been resolved with the darkness of past when a new team of Darkloids appears, begin lead by none other than Rockman's doppelganger.
an extended description!