Once protest banners emerge behind the goal and applause turns to jeering following loss after loss, J. League clubs tend to draw from a limited arsenal in order to placate fans and turn things around.
Sometimes the captain will address fans after the match, other times the manager or sporting director are called out onto the carpet by supporter groups to explain the state of the team.
A letter of apology published by the chairman himself is the next step, usually within close proximity to a change of manager.