Talk:SE.RA.PH -Second Ballet-/@comment-4802891-20190227042526/@comment-28605611-20190227062401

Beast III/R is the beast of lust. That info is in biography section: https://fategrandorder.fandom.com/wiki/Beast_III/R

So basically, I remember BB's debuff numb her 5 senses to prevent her more horny aka more powerful. And when she goes Ikuuuu~!, all hope is lost.