daikaioh question

does the batteries come with the daikaioh? also does daikaishinkenoh have a ikatenkubuster sound in this mode?

Yes. Just pull out the white slab to allow the battery to work. It uses LR44 batteries if you need to replace them.
Yes. Just hold down the button for a few seconds and it will automatically play. Works only for Daikaioh mode (all 4 forms) and not ebi origami mode.