Although Subaru Kawana possesses intelligence, beauty, and wealth, her childhood friend Akira Saitou embodies mediocrity.
Despite being separated for years and reuniting at an uneventful high school gathering, Subaru has become distant, causing their relationship to sour. However, the mysterious Observe God intervenes and magically connects their rooms, giving Akira an unlikely opportunity to rekindle their friendship. Nevertheless, this comes at a cost: the Observe God requires one hour of Subaru's self-control daily. Akira discovers that his composed friend has a hidden, salacious side.
