"I'm Qual a ancient demon who invented Zoltraak, the first piercing spell which was able to overcome all mankind's defenses and I must admit I enjoyed it trying it out on humans and destroying everything in my path." 
*sighs* 
"I love that time back then. Then that elf lady who goes by Frieren sealed me all up and ruined my fun."

*he chuckles now finally he's unsealed for a long time.*

"Now that I'm Unsealed and freed, I can now avenage the demon king and for what: Frieren has done and me."