BTOB have successfully wrapped up their first solo Japanese concert series, 'The Secret Diary', with over 10,000 fans!

The concerts were from April 29 to May 4 for a total of 4 concerts. This was their first Japanese concert series after only debuting in Japan six months ago.

The group performed the Japanese version of the track "WOW", as well as "Lover Boy" and "Insane". They also performed their Japanese single "Future", a track that charted 2nd place on Oricon's weekly singles chart. BTOB performed many more of their title tracks, as well as special unit performances for a total of 2 hours each concert.

After successfully finishing their concert series, BTOB expressed, "We're so lucky to be able to share this dream-like moment with the fans. After our first Japanese solo concert, we will work hard in order to promote even more actively. We will come back to you all with good music, and we ask for a lot of support and love towards BTOB."

SEE ALSO: [PHOTOS] BTOB express enthusiasm about finally meeting fans through 'Our Dream' fan concert tour

Congratulations to BTOB for successfully finishing their first Japanese concert! The group�came back to Korea on May 5 and will be focusing on individual activities for now. Sungjae in particular is starring in the currently airing drama 'School 2015', so make sure to check that out!