Original sentence: All 3 films were directed by Junichi Sato and produced by Sunrise.In addition, 3 full-length theatrical movies have been released: Keroro Gunso, the Super Movie, 2006; Keroro Gunso 2, The Deep Sea Princess, 2007; and Keroro Gunso 3, Keroro vs.Keroro, 2008
Edited sentence: All 4 films were directed by Junichi Sato and produced by Sunrise.In addition, 4 full-length theatrical movies have been released: Keroro Gunso, the Super Movie, 2006; Keroro Gunso 2, The Deep Sea Princess, 2007, Keroro Gunso 3, Keroro vs.Keroro, Great Duel in the Sky, 2008; and Keroro Gunso, Crushing Invasion, Dragon Warriors, 2009