you cheated.... now you pay the price in full basically this fight is when you manage to defeat final form Kristal, intentional game design, your not supposed to beat him, your supposed to die, there's a cutscene for it too. but if you defeat him you'll be transported to a black room where you'll meet Kristal's father, a deity FAR more powerful than Kristal. he will rip your soul out, and proceed to put it in a failed cure, where you will suffer for eternity but before he does that its kinda like the boss this music originated from he will toy with you THEN does the said actions