Library Manga Manhwa , Japanese

ake sure you’ll have a good time.” 29-year-old virgin, Chiaki, housesits her uncle’s big house. She enjoys her freedom living by herself for the first time, but a strange man shows up at the house suddenly claiming he also lives in the house. He turns out to be the president of the company where Chiaki works! He caresses her in the bathroom, during dinner, at the office, and melts her body…What do you mean this is a secret project of the company…?