In The Arrogant Kaiju Princess and the Detective Servant, players assume the role of a detective who has been kidnapped by aliens and must serve Daigneux, a powerful alien girl. The core mechanics involve building a relationship with Daigneux through various interactions, completing missions, and managing the detective's training to enhance the abilities of summoned monsters.

The storyline follows the detective's struggle to survive under the rule of Daigneux, the Celestial Tyrant, while uncovering secrets of the alien planet. Players must navigate the challenges of serving a capricious master while seeking to improve their standing.

The game stands out with its fully voiced dialogue in Japanese, dynamic animated graphics, and immersive management-style mechanics, offering a rich variety of outfits and enhanced H-scenes that deepen the gameplay experience.