On the September 6th episode of MBC every1's 'Video Star', Yubin featured as a guest for the 'charming hot body' special. She explained her thoughts on her diss rap battle with SISTAR's Hyorin on 'Unpretty Rapstar'. Hyorin had expressed on 'Video Star' she was angry that Yubin brought up her SISTAR members.
Yubin responded, "I got angry in the moment when Hyorin mentioned J.Y. Park in her diss rap lyrics as well." She also mentioned she was disappointed J.Y. Park was so focused on the project girl group Unnies from 'Unnies' Slam Dunk', saying, "J.Y. Park promoted Unnies on SNS first."
Unnies' song "Shut Up", produced by J.Y. Park, was a big hit.