The anime does not explicitly refer to Evangelion or other animations to which Bandai does not hold the copyrights, but only recreates the "feel" of famous scenes from these anime.The anime is much more detailed and direct in its Gundam references, however, since its animation studio, Sunrise, is a subsidiary of Bandai who does hold the rights to the Gundam franchise. Season 2 began on April 1, 2005, with episodes aired on Fridays instead of Saturdays. With Season 4's debut on April 7, 2007, episodes aired on Saturdays instead of Fridays. With Season 7's premiere on April 4, 2010 episodes aired on Sundays instead of Saturdays.