Kotaro Uchikoshi is a Japanese video game director and writer. He is known for his work on visual novel games, including the Infinity and Zero Escape series. His writing style often incorporates elements of science fiction with various scientific and philosophical themes, and makes heavy use of plot twists.

Infinity is a series of visual novel video games mainly developed by KID. The first game in the series, Never 7: The End of Infinity, was originally released as Infinity for PlayStation in 2000, and was later ported to other platforms. Since then, four more games have been developed, as well as a remake of the second game. The first three games were directed by Takumi Nakazawa, and the first four were planned and written by Kotaro Uchikoshi and composed for by Takeshi Abo. The fifth was written by the otome writing group Run & Gun, and featured sound production by the band Milktub. Alongside Memories Off, Infinity was KID's flagship series.