It turns out to be a reverse NTR (Netorare, a sexual relationship) with a seemingly unremarkable subordinate, but actually the most beautiful subordinate in the company... Tsubaki Rika NACT-065

Returning from a business trip with her subordinate Rika, the train service was cancelled due to the typhoon. They managed to book accommodation at a nearby office, but only one room was available. Soaked to the bone by the heavy rain, their clothes drenched, the two faced each other wrapped in towels. Although trying to hide their awkwardness, Rika sat closer than usual and whispered, "I've always admired you, Manager." Those words changed the tense atmosphere. Despite trying to rationally stop themselves, they slowly crossed that line.