Bruises spotted on Nana's knees

After School's Nana is attracting much attention with the bruises on her knees.

An online community uploaded photos of Nana's recent performance with the title "Bruises on Nana's knees,maybe...."

She is seen wearing Orange Caramel's performing outfit in the photos above,fans commented after seeing the photos,"She must have practice hard for After School's comeback","Anyway, she's still hot" and etc.