Kainin Shoya ~Ichizuna Shacho Ha Kyuai No Te Wo Yurumenai~

Katabutsu's secretary, Ayano, suddenly confided to the president, Nakui: "I want a child." and they ended up spending the night together. Later, her pregnancy was discovered! When I told Nakui about my pregnancy, he was unexpectedly overjoyed...!? "I'll instinctively train you to want me." he said. She had no intention of marrying him, but she was courted passionately, and they began living together in a luxury apartment. She was supposed to give birth by herself, but she was gradually moved by his courtship...!? (Source: Starts Shuppan, translated)