Plot: EVE Burst Error is a 1995 erotic visual novel adventure game developed by C's Ware. It was written and produced by Hiroyuki Kanno, with chiptune video game music composed by Ryu Umemoto. Wikipedia
Plot: Hourglass of Summer is a Japanese visual novel that was released by Princess Soft. It was brought to the U.S. by the Hirameki International Group. It was one of the first interactive dating games to be translated into English. Wikipedia