Talk:Demon Way, Geppakugiri/@comment-24692457-20140611031650/@comment-6053530-20140611032201

To be exact, it's 1 counter per battle, and a battle period is defined as the period from deciding which monster is attacking and which monster is being attacked up to the point a definite resolution, such as damage from the battle or monsters are destroyed, has been reached.

The moment your monster is destroyed, the battle period ends. Quoted from NubatamaNinja, "when a monster is destroyed, there is a separate timing to use Counter cards or abilities for each monster that was destroyed."

This is when multiple casts of Geppakugiri is possible.