The interactions with fans on Koala, especially when they visited a fan's house and cooked for the fan's family and friends.
And the show Koala itself. The girls are so down-to-earth in the show, and watching the girls have fun without the hassles of celebrity life is definitely heartwarming.
After being on hiatus from the life of an idol for nearly half a year (aside from movie promotions for films she had filmed prior to her hiatus), Sulli re-emerged unannounced with Luna at the opening ceremony for SMTown @ Coex Artium. It has yet to be announced if this means Sulli will be rejoining the group.
Reactions were mixed, but the majourity were surprised and glad to see Sulli glowing and healthy.