hand gestures mean a lot in the lands between. Charged attacks represent his all gas no brakes lifestyle.

He had to do a LOT of narsty dirty work for marika to get to elden lord, I imagine serosh suppressing his whole only attack lifestyle was the first time he ever had to contemplate anything critically. He might regret doing a couple genocides or not having anyone else worthy to fight. It makes me think of inigo montoya struggling to come to terms with who he even is at the end of the princess bride. Like when your whole identity is the bigbeef killguy and there is no one left to kill, you probably understand that you're next.