straykids lightstick-the app for using straykids light sticks. If you register your ticket number through the app, you can enjoy a more enjoyable performance through various directings at the venue. * Feature guide 1. Ticket number registration If you register your seat number on the official cheerleading rod during the performance, the color will automatically change to match the stage production, so you can enjoy the performance more happily. 2. Check the battery level of the Stray Kids lig