 On December 15, 2006, "Minikiss ~Tsuyokiss Fan Disc~" was released by Candy Soft.The sequel entitled "Tsuyokiss Nigakki" to "Tsuyokiss" was developed by Candy Soft and went on sale on April 25, 2008.Its scenario was written by NOB because Takahiro, who is a director and a scriptwriter of "Tsuyokiss", left Candy Soft.