Secret Mission 3
(Learning from Karol's experience, you used the billybally plants to stun Gattuso.)
Please refer to ????????????(Secret Mission 1) for more information on Secret Missions in general.
If you hit one of the four billybally plants, their powder will stun anyone nearby them. You have to attack Gattsuo while he is stunned for this Secret Mission. Since Gattuso has the habit of switching targets, magic is too slow to be successful. Hit the billybally plant with a normal attack once Gattuso is near them. Move away quickly so that you do not get stunned as well. If this happens, you can quickly switch to another nearby character and attack Gattuso. You can infinitely use the powder of the billybally plants, so if you were not successful the first time, you can give it another try. To be able to switch between your characters in battle, you should have synthesized the item ???????(Moon Selector; 1027), however at this point of the story, you probably will not be able to synthesize it yet.