Tenchi Souzou Design-bu Episode 10 English Subbed Episode Title:Idea 10.Episode Description:Somehow Shimoda stumbled into an underground kingdom. This kingdom is a land for "animals that create the perfect society", with their queen at the top. In this society, there are few physical differences, no aging, and the collective's happiness is prioritized over the individual's. It's too ideal a place, but there is a hidden truth about this system.