After School Kahi's power as the big unnie was uncovered at the last episode of Sweet Night on the 9th. In this episode, Haha and After School showed up as the final guests. During the show, the newest member to group, Lizzy, told a story, revealing, "A few days before debut, I was late to practice after going to a vocal lesson. Kahi unnie exploded at that time." Shin Dong Yup added jokingly, "Don't talk about when she hit you." Kahi explained, "That was two days before our comeback. We had to practice but one person wasn't coming because of this, another wasn't there because of that, etc. But Lizzy came last. She came very late at night and all I said was, 'Are you even going to say hi?' Lizzy claims she did greet us but I didn't see it. It was a small misunderstanding." Though this wasn't a big deal, you can see that Kahi definitely has a certain power and force.