Nisekoi: False Love Vol. 6 (manga)

Just when things seem to be going well between the two, a misunderstanding during their beach trip puts a damper on their false relationship. Back in school, Raku and Chitoge are selected to play Romeo and Juliet at the school festival. However, Chitoge's still mad at Raku and refuses the role! When the class draws names for a new Juliet, Kosaki gets the part. But on the big day, nothing goes as planned!