Takuya Kaze is a high school student who has mastered the art of disengagement. He keeps his grades unremarkable, his presence minimal, and his expectations low. Detachment, after all, is efficient.

That carefully maintained distance begins to fracture when a trivial bet pulls him into an unexpected arrangement with Sato Itsuki, a girl known for her calm demeanor and academic excellence. What starts as a temporary, artificial relationship gradually drifts into something harder to define. Outings meant to be transactional linger longer than planned. Casual interactions gain unintended significance. Kaze, who prides himself on seeing through social illusions, finds himself unsettled by how easily performance can resemble sincerity.

As the days pass, rumors spread through the school with mechanical enthusiasm. Whispers replace silence, and glances follow him where indifference once reigned. Kaze becomes aware of a reality he has long dismissed.