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In this unusual calculus tutorial, the teacher, Mike, finds his lesson interrupted by an unexpected visitor, Sarah, who's struggling with the subject. As Mike tries to explain the properties of integration, Sarah's confusion leads to a close encounter, their bodies almost touching. Mike's pointer traces curves on the whiteboard, mirroring the rising tension between them. Sarah's innocent questions about limits and derivatives soon take on a double entendre, as Mike's voice thickens with desire. The classroom heats up, the chalk squeaks, and the lesson veers towards a whole new kind of integration.