On August 31, a video of Mi-hee & Si-ho's surprise birthday party was released on the official social media channel of BOTOPASS.

In the video, Ji-won and Choi Sang, Seo-yoon, Lia, Harin and A-yun are each divided into roles to prepare Mi-hee and Si-ho's birthday parties in a special way.

Mi-hee and Si-ho, who received special love from the members, said, "I never thought about it. I was so touched, and I'm really blessed that my precious members congratulated me. I had a great time thanks to the members," he said, not forgetting to thank them.