Sister's Slam Dunk

Episode 6 (1x6)

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The members visit Music Bank and watch a pre-recording of Twice's "Cheer Up". Afterwards, they spent some time with the members as they learn more about being an idol. They also hear the pre-produced version of their debut song, "Shut Up". They also visit I.O.I during their debut stage practices and have talks regarding debuting as girl group from different agencies.