Ma Cherie -Ego no Katamari Katamari no Ego-

This is an adventure game where you choose one of the 2 maids to enjoy the carnal pleasure in the end of the world.

You are to explore in the mansion. Your memory with the two maids revives and you can talk to them.
You let one of them go back to her family home and use the remaining one for your pleasure.

Heroines are fully voiced.
Steffi (voice: Amane Shiina) is a cheerful girl from a children's orphanage.
Luciere (voice: Ryo Suzuki) is a pure and elegant girl from an impoverished aristocrat family.

[description from DLsite English]