Goshuushou-sama Ninomiya-kun Episode 4 English Subbed Episode Title:Let's Stay Home!.Episode Description:While Shungo is taken away for extra fight training, Mayu attempts to help Reika with the housework, only to make more messes. When she finds a hidden passage, she and Reika explore it, but get lost and trigger a bunch of traps. They finally get out, but Ryōko punishes them for slacking off.