B2ST. The second most dangerous gangster group in IU's neighborhood. IU was always told never to mess with them and always got out of their way, and she had always obeyed that rule. Until one rainy and stormy night, when she was forced to do something unbelievable. Yang Yoseob, one of the members of B2ST, was fighting their arch enemy, the most dangerous gangster group, 2PM. Yoseob was injured during the fight and secretly ran away. He arrived at a house, which was surpris