Girl group f(x)'s members took a group self-taken photo together.

"Happy Osaka, we hope to see you again," posted Amber on her Instagram on Monday along with a picture.

In the picture, Amber is making a cute face, sticking out her tongue. Krystal is behind her, resting her chin on Amber's shoulder, and Luna is making a cute pose in the back with her arms up.

f(x) performed at the 'SMTOWN LIVE CONCERT TOUR' in Osaka on Saturday and Sunday.