1.
initiative, preemptive action, first move
Taking action before the other party, gaining the advantage by acting first.
2.
first player, black (in shogi/go)
The player who makes the first move in board games such as shogi or go.
Related Words
Antonym:
後手 (reactive position)
Compare:
手番 (one's turn (in a game))
Compare:
先制 (striking first)