if your main char is not using his jutsu or his turn regardless of initiative then.

imo either your main char has been sealed by some opponent effect or there is a bug.

you should test if it applies to all your fights or only just maybe it happened to one or two fights and try to see if the error reoccur.

if it seemed to be a reoccurring bug in all ur fights, you should report it to the bug and support section of the forums.