A Matter That Can Be Understood by the Demon King ability

Originally, a salaryman named Taniketsu (Gu Qianwang), who faced repeated setbacks in his career, was chosen by the Demon King to be the vessel for a human body. He gained magical powers, and while feeling fear of the Demon King’s power, he also opened the door to a new world. As he became the object of admiration for many girls, who all fell for him, he began to realize that his company might not be as simple as it seemed. With the help of the Demon King’s powers and the girls, Taniketsu (Gu Qianwang) embarked on uncovering the mystery hidden deep within the company.

Official Translations:
S.Chinese

Has vertical webtoon and separate manga releases.