Cyanotype Daydream is a visual novel developed and published by Laplacian. It was released on Steam for Microsoft Windows on February 9, 2022.
Kaito wakes to find himself in a strange room, with no memories, and a taciturn girl named Yonagi by his side. Upon learning of his role, he immerses himself into three wondrous dream worlds with her. When all three stories meet a bitter end, Kaito recovers his memories, and the true story unfolds.