This skill first makes its appearance in the .hack//Sign anime series. It also appears in other games and shows that form part of the .hack franchise. For example, in the .hack game series, the main character Kite is able to use Data Drain on monsters, as he wields the Twilight Bracelet which was given to him by Aura. This gives him the ability to perform Data Drain after "Protect Break"ing his targets.
Related ThreadsData Drain Help - last post by @ Nov 28, 2004
Data Drain Items - last post by @ Mar 14, 2003
A good/VERY easy way to bring down the warning for Data Drain - last post by @ Sep 13, 2003
data drain - last post by @ Jan 3, 2005
data drain help - last post @ Mar 11, 2004