Eru Futate (双ふた天て 彗え流る, Futate Eru?), is a character in The 100 Girlfriends Who Really, Really, Really, Really, Really Love You. She is Rentarou's 34th girlfriend, and a third-year student at Ohananomitsu High School, in class 1-1. Eru is a fashionista, and is especially proud of her long hair, which she styles into twintails. Rentaro first meets her when she bumps into him on the street, while playing with her twintails. Eru believes that she looks her best when her hair is in twintails, and dislikes it when people attempt to tell her that she does not need them to look beautiful. When one of her hair ties breaks, Rentaro sacrifices his jacket to create a makeshift hair tie for her. She then confesses her feelings to him, believing him to be the ideal person to form a couple with.