This game follows a female character named Saige (renameable) who is given a device that lets her travel through a portal, taking her 100 years into the past.

Chrono Days allows the player to go through 30 days, traveling through the past and present. The player can interact with eight dateable characters and choose between multiple endings. There are also available cheat codes to skip days, earn money, earn hp, unlock characters and skip the relationships to get the full relationship.