Tsuyokiss is a Japanese visual novel that has been adapted into an anime television series directed by Shinichiro Kimura. The story focuses on a group of students at a high school and the various romantic attachments that the characters feel for each another.
Tsuyokiss originally began as an eroge for Windows by video game developer Candy Soft first released on August 26, 2005. A PlayStation 2 version of the game called Tsuyokiss ~Mighty Heart~ was released with erotic elements removed. A fan disc with some minigames for Windows named Minikiss ~Tsuyokiss Fan Disk~ was released. The anime based on the original game began airing in Japan on July 1, 2006.
Tsuyokiss Nigakki (つよきす 2学期, Tsuyokiss: The Second Term) is the sequel to Tsuyokiss, available for Windows, PlayStation 2 and PlayStation Portable. A third installment, Tsuyokiss Sangakki (つよきす 3学期, Tsuyokiss: The Third Term) was released for Windows on March 31, 2011.