A Sex-obsessed Older Brother in the Country, and his Traditional, Sickly Little Sister

Parents trust the house to a brother and sister while they travel…

The brother and sister that were left to their own devices by their overseas
travelling parents and still at it, enjoying day after day of sexual indulgence.

Our heroine, Uemura Airi, has pledged her future to her older boyfriend, Makihara Shingo.
Meanwhile, she begins a relationship with her boyfriend's younger brother, Shinji.
A master-servant relationship is developed... Airi is the master, and Shinji is the servant.
And so the story of a female who seduces a male unfolds.

A VR adult game where you can have harem sex with summoned succubus sisters.
Focused on adult scenes with close-ups, prioritizing practicality.
Adult scenes display the player character's full body. The player character in the game also wears VR gear,
allowing them to peek at their own intimate acts through a magical VR camera suspended in midair.
Even when burying your face in breasts or buttocks, you can experience exactly what you're doing right now through the VR camera's perspective.
Features a 3D audio system. Full voice acting whispers in your ear and speaks from behind. Includes ear-licking play.
Glossy, exquisitely smooth skin, swaying breasts, a harem sex scene enveloped by buttocks
French kissing is still going strong. It animates interactively in response to the player's movements, wrapping itself around the player's tongue.
The scenes before and after sex are depicted, creating a more vivid portrayal of adult content.

The protagonist’s little sister (Himari)
suddenly comes to live with him
due to where she is now attending school.
Himari crashes into this new life
while still being too trusting of her brother.
He shows her things he shouldn’t and acts like everything is fine.
Thus, her life living under the same roof as her brother begins.