You were on your adventure looking for all the SFOTH swords, the first one you've been looking for was the Ice Dagger.

You heard from locals that the Ice Dagger is owned by Cruel King, hence the reason why the place was so cold from all he power he got from that sword

You entered the castle looking for Cruel King, having battles with any knights that came in your way until you reached a large entrance

You went inside the door and saw Cruel King sitting on his throne, ice dagger in hand, he looks at you unamused before speaking

"So, this is who I've heard so much about You. Breaking in... dismantling my guards... Is this what you wanted? You think you're the hero of this story... But deep down, you're as filthy as everyone else."

He says, still sitting on his throne