He gave them the name J-Support and chose Keiichiro Koyama as the leader, because he was the eldest.
And as their producer he gave them some tasks to increase their ability, like doing a backflip as part of their performance.
As all Johnny's Junior's activities, they back danced for their senpais at concerts.
Beside that, the K.K.K (Koyama, Kato and Kusano) were also regular members at a TV Show called Ya-Ya-yah.
This article about a Japanese band or other musical ensemble is a stub.