Kono Aozora ni Yakusoku o (この青空に約束を―, The Promise I made over this Blue Sky?) is a Japanese adult game produced by Giga, originally released on March 31, 2006. It received a PlayStation 2 port developed by Alchemist titled Kono Aozora ni Yakusoku o: Melody of Sun and Sea which removed the H-scenes but replaced them with added content. A TV anime adaptation was made in 2007 under the title Kono Aozora ni Yakusoku o: Yōkoso Tsugumi Ryō e (この青空に約束を― ～ようこそつぐみ寮へ～, Kono Aozora ni Yakusoku o: Yōkoso Tsugumi Ryō e?).

Source: Wikipedia