Aisuke Shino commands the Shino family enterprise, a business deeply rooted in the sex-based entertainment industry. Confronting declining profitability, he leverages his leadership role to assign his son Kazuma Shino a pivotal mission: conducting immersive market research by studying sexual dynamics across diverse environments. This strategy aims to revitalize their enterprise through Kazuma's firsthand experiences.

The mission imposes rigorous constraints, notably prohibiting ejaculation in women's presence during training—a violation that triggers Kazuma's immediate disqualification as heir. Aisuke Shino’s narrative function hinges on deploying this directive as the catalyst for the protagonist’s journey.