Today was the 10th anniversary for Hello! Project Kids (Berryz Koubou and °C-ute)
They celebrate it with a cake and berryz Koubou came to the concert of °C-ute and they perfromed together Chou HAPPY SONG live.
Those 2 gourps changed alot these past years they become a better group.
Watch the recording concert here on °C-ute channel: http://www.youtube.com/watch?v=tpPHmH6DNBQ&feature=player_embedded