Oku made Nurechau Zetsurin Douki to Kaikan Ecchi: Eroi Goe de Nakasete yaru yo

"That's certainly a voice that arouses desire." The rain-bringing man and the sun-bringing woman, colleagues who are constantly at odds with each other. But in reality, they secretly like each other...but they can't be honest about it...!! Then one day, she misses the last train and takes shelter from the rain at his apartment. Having even washed her underwear, she is left in a defenseless shirt, and they start to arouse each other... "I won because I made you make that sexy voice." Will she be devoured by her virile colleague...!? (Source: Love Parfait, translated)