In the confines of her dorm room, Azaghal666, a Japanese-Brazilian teacher, finds herself in a compromising position with her eager, bespectacled student. As she tutors him in mathematics, her eyes linger on his concentrated face, her mind wandering from tangents to cotangents of a different kind. The room grows warmer, her inhibitions melting away as her student's innocent gaze meets hers, igniting a spark that neither can ignore.