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Asami Shiino—a popular teacher known for her calm, stoic exterior and deep dedication to her students—effortlessly draws attention with her striking beauty and voluptuous figure, despite possessing a surprisingly naive side. Concerned about Masaki, a student in her homeroom class, she unexpectedly finds herself entangled in a delicate situation following a sudden mishap.

To resolve the issue, Asami takes it upon herself to soothe Masaki’s physical reaction with a completely deadpan expression, constantly reassuring herself that this is “strictly part of her professional duties.” Even when marked by her student’s physical aftermath, her calm gaze remains entirely unfazed. Overwhelmed by his teacher’s unbelievable innocence, Masaki’s desires ignite, seizing the opportunity to push the boundaries step by step…