The Sickness of Lovers

Description
The Sickness of Lovers is a Japanese erotic visual novel set in a world where people who are in love can contract a dangerous illness which causes sudden death. Despite the threat of the titular 'love sickness', our protagonist, Naoki Hirota, asks out his classmate, Tsunami Shirase, and to his surprise, she accepts. What will be the fate of this new couple?
The game features Japanese voice acting for all significant characters except the protagonist and contains explicit sexual content.