Conversation so far:
What happened with Arashi in 1999?
Johnny & Associates announced the group Arashi's debut on September 15, 1999 through a press conference aboard a cruise ship off the coast of Honolulu, Hawaii.
Who was in the band Arashi in 1999?
Then-president Johnny Kitagawa chose five trainees from the Johnny's Jr. division of the agency to become the members of Arashi, the Japanese word for Storm.

Question: Who were the trainees?
Self-contained rewrite: Who were the trainees Johnny Kitagawa chose to become members of Arashi?