Sister Princess Episode 11 English Dubbed Episode Title:Secret Tour with Bro.Episode Description:Wataru and his sisters set out in on an underwater tour in a submarine single-handedly constructed by Rin Rin. At first, the ocean is beautiful and everything is great, but a storm comes in and the submarine starts leaking. Wataru tries to patch it up, but he fails and everyone is scattered and ship-wreaked, leaving Wataru and Mami alone.