Under the theme of high school friends, the members of B1A4 ― Jinyoung, CNU, Sandeul, Baro and Gongchan ― trotted out onto the SK Olympic Stadium stage decked out in mock high school uniforms. They ignited the sea of young, screaming teenage fans excited for the boys’ comeback with the opening performance of their new single “Who Am I?”

Returning with its second studio album “Who Am I” on Jan. 13, almost two years after the release of the group’s debut studio album, the members of B1A4 greeted some 5,000 fans with two live performances in Seoul as part of its “The Class” comeback concert event on Sunday.

With sweat pouring down their young faces, the energetic K-pop idols delivered a spirited two-hour concert of more than 20 songs, unveiling a number of songs from their newly released album including “Lonely,” “Oh My God,” “Seoul” and “Amazing.”

The backstory of the concert was set in a high school, as the members of B1A4 were on a crusade to further public awareness of school violence and bullying.

“We think that school violence continues to be a serious problem and we wanted to put on a performance that has a special message,” said CNU during the show. He went on to express his hope that no one in the B1A4 fan club participates in any sort of school-related bullying, and stuck out his pinky finger and asked them to make a promise to abstain from such behavior. 

During the concert, the boys of B1A4 not only relied on their song and dance numbers to entertain the audience, but also filmed and showed their own comedic 11-minute high school skit, which they unveiled in two parts in hopes of further touching on the group’s anti-bullying message as well as showing off the members’ acting skills.

B1A4 will soon bring “The Class” to Busan for the group’s first solo concert in the city on March 1.

By Julie Jackson (juliejackson@heraldcorp.com)