: Takashi uncovers the "Muttsuri" (closet pervert) nature of the women, finding that their public personas differ wildly from their private behaviors.
: The older stepsister. She is initially portrayed as diligent and repressed , hiding her true desires behind a professional or serious exterior until Takashi intervenes. : Takashi uncovers the "Muttsuri" (closet pervert) nature
: Leveraging their secrets, Takashi initiates sexual relationships with each woman, often while his father is away. Her character follows a "bratty" archetype but is
: The protagonist who, after discovering his family members' hidden activities—such as secret cosplay and late-night encounters—takes a dominant role in their lives under the guise of "strengthening family bonds". : Leveraging their secrets
: The younger stepsister. Her character follows a "bratty" archetype but is revealed to have secretly masochistic tendencies that Takashi eventually exploits. Romantic & Narrative Structure
: Takashi's lustful stepmother. She is characterized by her past as a gravure model and her voluptuous, erotic presence.
The primary relationships in the series are defined by the "Komiya family" structure and the specific archetypes of the female leads: