Sengoku High

On a 159 bow master, I was doing great when I used a +7k hp pot (6.7k base lol) -- I was getting hit for up to 15k at stg 20.
Then ranmaru hit me for 18k and I said f'uck this (only had 16k hp)

Thanks to what Rexaar said and that checked it today all you have to do is the second you get into ranmaru's room hurricane and don't stop till he's death since it seems his KB is really low and while he is in KB state he's as good as death(I throw a puppet just in case).