[Kondom] Sticky Fingers (Hontou wa Eroi Otogibanashi) [CulturedCommissions]

A schoolgirl's urges follow her everywhere—stall, equipment room, even the infirmary—her fingers never staying idle long enough to feel settled. Between pinning her desk neighbor down with teasing touches and bending bare for the school nurse's thorough thermometer 'examinations,' she confesses everything in letters to a professor who prescribes regular, increasingly intimate reports. What starts as a shameful secret becomes an arrangement neither of them plans to end.