Kono Aozora ni Yakusoku o (English Wikipedia)

Oppliger, John (June 26, 2007). "Ask John: When Will The Harem Anime Genre Die?". AnimeNation. Archived from the original on August 22, 2009. Retrieved June 22, 2020. Titles including Kono Aozora ni Yakusoku wo and Nagasarete Airantou represent contemporary Japanese harem anime.

dengekinet.com

gs.dengekinet.com

"読者が選ぶ MY BEST ギャルゲーランキング" [Readers Choose My Best Galge Rankings] (in Japanese). Dengeki G's Magazine. Archived from the original on 2007-10-11. Retrieved 2013-02-15.

gematsu.com

Romano, Sal (August 21, 2024). "Romance visual novel remake Kono Aozora ni Yakusoku o Refine announced for PS4, Switch". Gematsu. Retrieved August 21, 2024.

moe-gameaward.com

"美少女ゲームアワード2006 結果発表特設ページ" [Bishōjo Game Award 2006 result announcement page] (in Japanese). Archived from the original on 2010-02-04. Retrieved 2010-01-25.

tgl.jp

play.tgl.jp

"Kono Aozora ni Yakusoku o: Te no Hira no Rakuen official website" (in Japanese). TGL. 2009-06-25. Archived from the original on 2010-03-06. Retrieved 2010-01-27.
"Kono Aozora ni Yakusoku o official website" (in Japanese). TGL. Archived from the original on February 21, 2016. Retrieved 2015-10-01.

web-giga.com

"Kono Aozora ni Yakusoku o: Staff & Info" (in Japanese). Giga. Archived from the original on 2016-09-14. Retrieved 2010-01-27.

web.archive.org

Oppliger, John (June 26, 2007). "Ask John: When Will The Harem Anime Genre Die?". AnimeNation. Archived from the original on August 22, 2009. Retrieved June 22, 2020. Titles including Kono Aozora ni Yakusoku wo and Nagasarete Airantou represent contemporary Japanese harem anime.
"TGL/Alchemist: "Kono Aozora ni Yakusoku o: Melody of the Sun and Sea" Game Introduction" (in Japanese). Alchemist. Archived from the original on 2010-07-18. Retrieved 2010-01-29.
"Kono Aozora ni Yakusoku o: Staff & Info" (in Japanese). Giga. Archived from the original on 2016-09-14. Retrieved 2010-01-27.
"TGL/Alchemist: "Kono Aozora ni Yakusoku o: Melody of the Sun and Sea"" (in Japanese). Alchemist. 2007-07-13. Archived from the original on 2009-02-04. Retrieved 2010-01-27.
"TGL/Alchemist: "Kono Aozora ni Yakusoku o: Melody of the Sun and Sea" New Additions" (in Japanese). Alchemist. Archived from the original on 2010-07-18. Retrieved 2010-01-27.
"Kono Aozora ni Yakusoku o: Te no Hira no Rakuen official website" (in Japanese). TGL. 2009-06-25. Archived from the original on 2010-03-06. Retrieved 2010-01-27.
"Kono Aozora ni Yakusoku o official website" (in Japanese). TGL. Archived from the original on February 21, 2016. Retrieved 2015-10-01.
"TGL/Alchemist: "Kono Aozora ni Yakusoku o: Melody of the Sun and Sea" Download" (in Japanese). Alchemist. Archived from the original on 2009-02-04. Retrieved 2010-01-28.
"美少女ゲームアワード2006 結果発表特設ページ" [Bishōjo Game Award 2006 result announcement page] (in Japanese). Archived from the original on 2010-02-04. Retrieved 2010-01-25.
"読者が選ぶ MY BEST ギャルゲーランキング" [Readers Choose My Best Galge Rankings] (in Japanese). Dengeki G's Magazine. Archived from the original on 2007-10-11. Retrieved 2013-02-15.