Since COVID-19, YouTube has become a semi-essential platform for knowledge workers, but the side effects of the showdown are fatal to knowledge workers. YouTube is a mixture of various functions and contents, so it is difficult to apply the same designs that induce behavior suppression. In this background, it is necessary to persuade users on YouTube platform in a flexible way. We proposed a design that persuades users to reduce watching YouTube through metaphorical visualization. We conducted a month-long field study with 35 participants and compared and analyzed them by dividing them into two groups (simile expression and metaphorical expression). Discussing the final results, it argues that the user's data understanding perspective and the resulting behavior may be affected by the data visualization type.