Kim Boram

The girl that everyone tries to be close with or to destroy her. The monster, they called her as a mental note to those who knew her. She's the favourite baby sister myungsoo has been taken care of eversince she got out of the child welfare when she was still a kid. But don't get deceived that baby face of her's, Boram plays with knives and guns. She is the leader of the known group in Korea who gives no mercy towards any one, St. girls also known as Street girls.

Sulli                               Hyejong                           Sohee

Sulli is also known as Sarang, Hyejong known as Orchid and Sohee, their maknae is known as Taehee, in the other part of them- part of them being in the St.girls. They are pretty, petite and fragile but don't be fool by their physical features,they ARE strong, fast and unbeatable nonetheless.

Sarang is however the hidden one according to boram. She had to watch the fight instead of helping hence the rumors about her being accepted to be one of the St girls becuase of her pretty and innocent face.

Orchid is fast.

While Sohee is good at tacnics.

Infinite. Infinite have grown together with myungsoo and boram. They are there for him when he is in need or when boram is in need like to be bail of jail or to be reported to school.

ST Girls are back after being missing for 5 years however, things suddenly fall apart.