Question: Which Harry Potter film was #2 when Kamen Rider Decade: All Riders vs. Dai-Shocker opened at the #1 spot?

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OOO, Den-O, All Riders: Let's Go Kamen Riders: OOO, Den-O, All Riders: Let's Go Kamen Riders (オーズ・電王・オールライダー レッツゴー仮面ライダー , Ōzu Den'ō Ōru Raidā Rettsu Gō Kamen Raidā ) is a film released on April 1, 2011, to commemorate the 40th anniversary of the Kamen Rider Series.  While the film will feature all of the franchise's protagonists, the main heroes of the original "Kamen Rider" (1 & 2), "Kamen Rider Den-O", and "Kamen Rider OOO" will be the main characters.  The film's subtitle "Let's Go Kamen Riders" is an homage to the theme song of the original series, .  The film also marks the 60th Anniversary of the Toei Company and to commemorate it, the film features characters from other works of Shotaro Ishinomori: Kikaider, Kikaider 01, Inazuman, and Zubat.

Kamen Rider: The Next: Kamen Rider: The Next (仮面ライダー THE NEXT , Kamen Raidā Za Nekusuto , "Masked Rider: The Next") is a 2007 Japanese tokusatsu superhero film directed by Ryuta Tasaki and written by Toshiki Inoue.  The film was released on October 27, 2007.  The film borrows elements from the "Kamen Rider V3" television series and is a sequel to the "" movie (which was a film adaptation of the original "Kamen Rider" series).  Actor Kazuki Kato, who had previously portrayed Daisuke Kazama/Kamen Rider Drake in "Kamen Rider Kabuto", portrayed Shiro Kazami/Kamen Rider V3.  Both Masaya Kikawada and Hassei Takano reprise their roles as Takeshi Hongo/Kamen Rider 1 and Hayato Ichimonji/Kamen Rider 2, respectively.  It was given a PG-12 rating for its brief nudity and violence.

Super Hero Taisen GP: Kamen Rider 3: Super Hero Taisen GP: Kamen Rider 3 (スーパーヒーロー大戦GP 仮面ライダー3号 , Supā Hīrō Taisen Guranpuri Kamen Raidā Sangō ) is the 2015 entry of the "Super Hero Taisen series" film series, featuring the cast of "Kamen Rider Drive" and the appearance of Kamen Rider 3, which was originally created by Shotaro Ishinomori for the one-shot 1972 manga .  Tetsuo Kurata, ("Kamen Rider Black", "Kamen Rider Black RX"), Yuichi Nakamura ("Kamen Rider Den-O"), Kousei Amano, Takayuki Tsubaki, Ryoji Morimoto and Takahiro Hojo ("Kamen Rider Blade"), and Kento Handa ("Kamen Rider 555") reprise their roles in the film, which is scheduled to open in theaters on March 21, 2015.  A new actor Mitsuhiro Oikawa, confirmed to perform his role as Kamen Rider 3, as well as the cast of "Shuriken Sentai Ninninger" will also appear.

Kamen Rider Decade: All Riders vs. Dai-Shocker: Kamen Rider Decade the Movie: All Riders vs. Dai-Shocker (劇場版 仮面ライダーディケイド オールライダー対大ショッカー , Gekijōban Kamen Raidā Dikeido Ōru Raidā Tai Daishokkā , "Masked Rider Decade the Movie: All Riders vs. Dai-Shocker") is the superhero film adaptation of the 2009 Kamen Rider Series "Kamen Rider Decade".  The film was released in Japanese theaters on August 8, 2009, alongside the "Samurai Sentai Shinkenger" film, "".  In its first week in theaters, it opened at the #1 spot, edging out "Harry Potter" (#2) and "" (#3), earning over 2 billion yen (approx.  US$21M) in box office revenues.  It is the highest grossing Kamen Rider film to date.

Kamen Rider Battle: Ganbaride: Kamen Rider Battle: Ganbaride (仮面ライダーバトル ガンバライド , Kamen Raidā Batoru Ganbaraido , "Masked Rider Battle: Ganbaride") is a combination of an arcade game and a collectible item game featuring the protagonists of the Kamen Rider Series.  The game is being released as part of the 10th anniversary of the Heisei run Kamen Rider Series by Toei, TV Asahi, Ishimori Productions, and Bandai and features heavy tie-ins with the television series "Kamen Rider Decade", whose protagonists use cards similar to those used in the game.  It is played in a similar fashion to Sega's "" and "Dinosaur King" games, and uses special Data Cardass cards released by Bandai.  The game's card input uses collectible card game terminologies, and has resemblance and functionality similarly to the Decadriver in "Decade".  As the series progresses, the game controls change to suit the new Kamen Rider.  During the airing of "Kamen Rider OOO", "Ganbaride" arcade systems included an OOO Driver interface for the toy Core Medals, and with the broadcast of "Kamen Rider Fourze", slots for the Astro Switches became available, and the system became 3 VS. 3.  With the current broadcast of "Kamen Rider Wizard", Wizard Rings are available to use, and the game has reverted to 2 VS. 2 battles.  Ever since "Kamen Rider Gaim"'s TV series airing until onwards, the game is now renamed to Kamen Rider Battle: Ganbarizing (仮面ライダーバトル ガンバライジング , Kamen Raidā Batoru Ganbaraizingu , "Masked Rider Battle: Ganbarizing") .

Kenji Matsuda: Kenji Matsuda (松田 賢二 , Matsuda Kenji , born September 23, 1971 in Osaka) is a Japanese actor.  Matsuda began acting in high school when a girl he had a crush on convinced him to join the theatre club.  He later joined the sho-gekijo theatrical troupe Haiyu-Za.  Nowadays known for roles such as Kagero in the low-budget films "Shinobi: The Law of Shinobi", 2002, and its sequels "Shinobi: Runaway", 2005 (not related to the 2005 film ""), "Shinobi: Hidden Techniques", and "Shinobi: A Way Out".  He is probably best known in Japan for numerous roles he has played in the tokusatsu genre: starting with "Kamen Rider Hibiki" as Zaoumaru Zaitsuhara/Kamen Rider Zanki (as well as related characters: Buddhist monk Kamen Rider Touki in the movie special - a Sengoku-era version of Zanki - and an alternate Zanki from the Hibiki World as depicted in "Kamen Rider Decade"), and in "Kamen Rider Kiva" as Jiro/Garulu (who made a cameo appearance in "").  He has also appeared in a cameo in the "Kamen Rider G" special and has a recurring role in the series .  He played the role of Raizo Gabi in "Shuriken Sentai Ninninger".

List of Kamen Rider Blade episodes: This is a list of episodes of the Japanese tokusatsu television drama Kamen Rider Blade.  It is the fourteenth installment in the Kamen Rider series and is a joint collaboration between Ishimori Productions and Toei.  The series was preceded by "Kamen Rider 555" and succeeded by "Kamen Rider Hibiki".  The plot centers on a group of people, known as "Kamen Riders", that protect humans from creatures known as the "Undead".  The four Kamen Riders are portrayed by Takayuki Tsubaki, Kousei Amano, Ryōji Morimoto, and Takahiro Hojo.  "Kamen Rider Blade" originally aired in Japan on Sunday mornings at 8:00 AM on the TV Asahi channel from January 25, 2004 to January 23, 2005.  The series has also aired in the Philippines and South Korea.  Each episode lasted approximately 23–25 minutes.  The episodes were later released on DVD by Toei.  Twelve volumes were released with the first eleven having four episodes per DVD and the twelfth volume with five episodes.  Related titles include a theatrical release, "" released on September 11, 2004, and a V-cinema release, .

Kamen Rider W: Kamen Rider W (仮面ライダーＷ（ダブル） , Kamen Raidā Daburu , also called Kamen Rider Double) is a 2009-2010 Japanese tokusatsu drama, the eleventh series in the Heisei period run of the Kamen Rider Series.  It premiered following the finale of "Kamen Rider Decade" on September 6, 2009, and aired alongside "Samurai Sentai Shinkenger" in TV Asahi's Super Hero Time programming block.  Following "Shinkenger's" finale, it aired alongside "Tensou Sentai Goseiger", until "W" concluded on August 29, 2010.  The series is described as the .  In the first episode of Kamen Rider Fourze, W is revealed to be canon to the original Showa timeline, making it the first series to do so since "Kamen Rider Agito".

Harry Potter and the Half-Blood Prince (film): Harry Potter and the Half-Blood Prince is a 2009 British-American fantasy film directed by David Yates and distributed by Warner Bros.  Pictures.  It is based on the novel of the same name by J. K. Rowling.  The film, which is the sixth instalment in the "Harry Potter" film series, was written by Steve Kloves and produced by David Heyman and David Barron.  The story follows Harry Potter's sixth year at Hogwarts as he receives a mysterious textbook, falls in love, and attempts to retrieve a memory that holds the key to Lord Voldemort's downfall.

Kamen Rider Decade: Kamen Rider Decade (仮面ライダーディケイド , Kamen Raidā Dikeido , "Masked Rider DCD", "Masked Rider Decade") is the title of the first of the 2009 editions of the long-running Kamen Rider Series of tokusatsu dramas.  "Decade", as its title suggests, is the tenth of the Heisei Rider Series, having begun with "Kamen Rider Kuuga" in 2000.  It began broadcast the week following the finale of "Kamen Rider Kiva" and is featured in Super Hero Time alongside the 2009 edition of the Super Sentai Series, "Samurai Sentai Shinkenger".  The series ties in with the arcade game "", with Kamen Riders Decade and Diend using cards resembling those used in the game to transform and access various weapons.  Inspiration for this series was very likely to have been the fact that Toei had successfully ensured that the Kamen Rider series lasted a whole decade (2000-2009) without the show going into a period of hiatus which had always occurred since the franchise began in the 1970s.  The series' English dub aired on October 20, 2012, 5:30 p.m. at Singapore's Okto Channel, Mediacorp.

Supporting paragraphs: Kamen Rider Decade: All Riders vs. Dai-Shocker Harry Potter and the Half-Blood Prince (film)
Answer: Harry Potter and the Half-Blood Prince