Emu of Wonderlands x Showtime has one of the world's greatest gift, a smile that makes anyone's day. She always seemed to be a happy-go-lucky type of girl, but that wasn't the case. There are times, wherein she experienced sadness, like when her grandfather passed away. Of course, since that day, she promised she would never cry and keep smiling.
Back in the Wonderland Sekai, it was Len who told Emu that it's okay to express how you really feel instead of covering them with a smile. Emu really loved to see everyone smile as it fills her with glee. If something were to make the pinkhead show a saddened expression, her friends would be there to cheer her up and smile again.
Emu's gift is being able to make people smile, even if it may annoy people at some point or if people couldn't smile genuinely, like her senpai. Even so, Emu is blessed with a gift that you get to keep when you give it away. Seeing people happy is what she wishes for.