Question: What year was the Japanese anime Summer Wars, containing characters Professor Layton and the Eternal Diva, created?

Context articles: Professor Layton and the Curious Village
Summer Wars
Tsuneyoshi Saito
Professor Layton vs. Phoenix Wright: Ace Attorney
Professor Layton and the Last Specter
Professor Layton and the Miracle Mask
Professor Layton and the Diabolical Box
Professor Layton and the Eternal Diva
Professor Hershel Layton
Professor Layton and the Unwound Future

Professor Layton and the Curious Village is a puzzle adventure video game for the Nintendo DS system.
 It was developed by Level-5 and published by Level-5 in Japan and Nintendo worldwide.
 It was released in Japan during 2007, and in PAL regions and North America a year later in 2008.
 "Curious Village" is the first title in the "Professor Layton" series, directly followed by "Professor Layton and the Diabolical Box".
Summer Wars (Japanese: サマーウォーズ , Hepburn: Samā Wōzu ) is a 2009 Japanese animated science fiction film directed by Mamoru Hosoda, animated by Madhouse and distributed by Warner Bros.
 Pictures.
 The film's voice cast includes Ryunosuke Kamiki, Nanami Sakuraba, Mitsuki Tanimura, Sumiko Fuji and Ayumu Saitō.
 The film tells the story of Kenji Koiso, a timid eleventh-grade math genius who is taken to Ueda by twelfth-grade student Natsuki Shinohara to celebrate her great-grandmother's 90th birthday.
 However, he is falsely implicated in the hacking of a virtual world by a sadistic artificial intelligence named Love Machine.
 Kenji must repair the damage done to it and find a way to stop the rogue computer program from causing any further damage.
Tsuneyoshi Saito (斎藤 恒芳 ) (born April 28, 1965) is a Japanese composer and arranger for anime shows and video games.
 He composed the original music for the third Tenchi Muyo film "Tenchi Forever!
 The Movie", the feature anime film "", the "Fafner" anime series including the original anime series, its feature film "Fafner: Heaven and Earth", and its 2014 sequel "Fafner: Exodus" He composed and arranged the soundtrack for the anime series "Dennou Coil" "Kamen Rider Kiva", and "".
 In video games, he co-composed music for "Professor Layton and the Eternal Diva", and co-arranged the music for "Final Fantasy VI" that appears on the album "Final Fantasy VI Grand Finale".
Professor Layton vs. Phoenix Wright: Ace Attorney is a visual novel adventure puzzle video game for the Nintendo 3DS, and was developed by both Level-5 and Capcom, the former publishing it in Japan while Nintendo published it worldwide.
 The game is a crossover between two games series from both developers, combining the puzzle and exploration elements of Level-5's "Professor Layton" series, and the general trial mechanics of Capcom's "Ace Attorney" adventure series, the latter enhanced by the addition of a few new elements.
 Shu Takumi, the series director for the "Ace Attorney" series, assisted with the scenario designs for the game.
 The plot focuses on Professor Layton and Phoenix Wright, along with their associated assistants, working together to solve the mystery behind a young girl that both encounter separately, and a strange world they are brought to through her, with Layton focused on finding clues to solve the mystery, while Wright focuses on protecting people who are put on trial for being "witches".
Professor Layton and the Last Specter, known in Europe as Professor Layton and the Spectre's Call, is a puzzle adventure video game produced by Level-5 for the Nintendo DS handheld game console.
 "Last Specter" is the fourth game in the "Professor Layton" series, and is a prequel that takes place three years before the first trilogy, detailing how Professor Layton met his apprentice, Luke Triton and introducing Layton's assistant Emmy Altava.
Professor Layton and the Miracle Mask is a puzzle adventure video game developed by Level-5.
 It is the fifth game in the "Professor Layton" series, the second in the prequel trilogy of games, and the first in the series to be developed for the Nintendo 3DS.
 "Miracle Mask" was released as a launch title for the Nintendo 3DS in Japan in February 2011, becoming the best-selling game on the day of the system's launch.
 The game was later released worldwide in October 2012.
 "Professor Layton and the Miracle Mask Plus", an enhanced edition featuring new puzzles and added cutscenes, was released on the Nintendo eShop in Japan in February 2013.
Professor Layton and the Diabolical Box, known in Australia and Europe as Professor Layton and Pandora's Box, is the second game in the "Professor Layton" series by Level-5.
 It was followed by a third game, "Professor Layton and the Unwound Future".
 The game follows Professor Layton and his self-proclaimed apprentice Luke as they travel cross-country by train to solve the mystery behind a mysterious box that is said to kill anyone who opens it.
Professor Layton and the Eternal Diva (レイトン教授と永遠の歌姫 , Reiton-kyōju to Eien no Utahime ) , also known as Professor Layton: The First Movie (レイトン教授 ザ・ファースト・ムービー , Reiton-kyōju Za Fāsuto Mūbī ) , is a 2009 anime mystery comedy-drama film directed by Masakazu Hashimoto and produced by P.A.Works and OLM.
 The film is based on the "Professor Layton" video game series by Level-5, taking place between the events of the video games "Professor Layton and the Last Specter" and "Professor Layton and the Miracle Mask".
Professor Hershel Layton (エルシャール・レイトン教授 , Erushāru Reiton-kyōju ) is a fictional character and protagonist of the "Professor Layton" fictional universe, created by Level-5.
 Professor Layton is a player character in a series of puzzle adventure video games starting with "Professor Layton and the Curious Village" and most recently "Professor Layton and the Azran Legacy", in which he and his apprentice Luke Triton (with his assistant, Emmy Altava, travelling with the two in "The Last Specter", "Miracle Mask" and "Azran Legacy") investigate mysteries while solving various brain teasers.
 He also appears in an animated movie, "Professor Layton and the Eternal Diva", and has featured in manga and novels that have not been released in English.
 Born under the birth name "Theodore Bronev" in "Azran Legacy"
Professor Layton and the Unwound Future, known in Europe as Professor Layton and the Lost Future, is the third game in the first trilogy of the "Professor Layton" puzzle game series by Level-5.
 It was first released in Japan in November 2008 and was later released in North America in September 2010 and in Europe and Australia in October 2010.