Anguish

If Max felt mind numbing pain at seeing Kremeth's decapitated head and began shivering, Sebastian behaved like it was the end of the world for him. 

The moment when Max showed him the head and tried to hug him, Sebastian pushed him aside before constantly murmuring ' No…no…no ' as if not wanting to admit that this was real. 

A constant stream of tears dripped from his eyes as he began to bang the ground below violently with his fists, as his unfiltered strength caused the entire hill to tremble. 

" NOOOOOO, MAFTER KR- , NO, MAX- NO! " 

Sebastian was not ready to believe that his beloved master could die, as his entire life flashed past him and he found the world around him to be spinning. 

While for Max, Kremeth was a beloved master and a father figure, for Sebastian he was much more.