FSII Guide by 21337Ninja issue

Yeah, his guide told me "Anyways Pianus will jump out of the sea. I'm not listing this as a boss battle. It is not
necessary, he is too easy. You can stun and freeze him."

So I thought it was going to be easy until it 1 shot my whole team and I had to go back all the way to my nature temple save :(

Hi, what are your team's stats?
That boss shouldn't have been much of an issue unless you just somehow wandered there very prematurely.

Around level 50, he one shot my team with a skill called hold down after I failed to freeze him. I didn't know I was actually supposed to press the down button until later in the guide.