Sentimental Graffiti: First Window is a visual novel released for the Sega Saturn. The game follows Tanaka Ichirou, a high school student who receives a mysterious letter inviting him to meet. As he embarks on a journey across Japan, he reunites with twelve girls from his past, each representing a chapter of his memories, while he seeks to uncover the identity of the letter's sender.
The protagonist, Tanaka Ichirou, is a high school student who, prior to the spring vacation of his third year, receives a letter simply stating "I want to meet you." During middle school, his frequent transferring of schools allowed him to form unique relationships with various girls. In order to search for the sender of the letter, he travels nationwide to various places, and meets the 12 girls of his memories once again.