Group B1A4, who has been receiving much attention from the Japanese media, has successfully held their first Japan solo concert, 'B1A4 1st Concert 'BABA B1A4' in JAPAN'.

This concert was held yesterday at the Japan Yokohama Arena.

They sang their debut song, O.K" in a Japanese version and received much love from fans. They also communicated with their fans to be on a closer level.

Local Japan media also wrote articles about their concert and group, showing their popularity. B1A4 commented, "Fans are our energy. If we are together, we can sing all night long."

On the other hand, B1A4 will also be traveling to other cities in Japan for a total of 4 performances with about 30,000 fans.