Elfen Lied Season 1 Episode 13 No Way Back

Nana almost falls into the ocean, but Kurama arrives to save her. Since Nana damaged Mariko's vectors, she is unable to use them and is taken to a place to be watched over. Kurama tells Nana that he must kill Mariko and they go search for her. Lucy tells Nana that she wants her to do what Lucy can't do. Lucy goes to see Kohta and apologizes for making him feel sad so many times.