Popular idol group INFINITE prepared a special surprise gift for their fans.

Starting tomorrow, INFINITE will be holding their concert, 'That Summer'. INFINITE members Hoya and Dongwoo will also be performing a surprise stage as a unit group called, 'INFINITE H'. 

Woolim Entertainment commented, "The unit group is still not yet confirmed if they are going to officially debut, but they quickly made this performance for their fans."

Their concert will perform a total of 5 times with over 10,000 fans. They have prepared great performances and dances for their fans.

After the open of the ticket sales, the 10,000 tickets were sold out. This proves their popularity and their success as being 'sold out' idols.