sentences:  The sailor swimsuits, the concept costumes for this single, were designed by Junko Isogai (磯谷淳子) from the fashion house Dexi.On 17 May 2013, it was revealed that the group would take Japan's "National Weather Forecasting Licence Examination" to become legitimate weather forecasters in the country, in addition to its idol career.The examination has been held biannually since 1994, reportedly with a five percent pass rate.