Sister's Slam Dunk

Episode 5 (2x5)

Air date: Mar 10, 2017

Kang Ye-won goes to an otolaryngologist to be diagnosed on her vocal folds' condition. Later on, they begin the vocal practice for their new song with vocal coach Jang Jin-young. Afterwards, the members have a birthday party for Somi and Kang Ye-won at the latter's house.