The demon showed up at the dorm, threatening to throw a fireball at it in order to kill me. Samasu-sensei, Desdemona-sensei and Haruka-san all stepped in to try and protect the dorm while Yuya tried to evacuate everyone.

Eventually the guy started a dark game and Desdemona-sensei dueled him, but he baited her, got her angry on purpose ... and she fell for it. The guy summoned his demon form and...
... even with the last attack, Desdemona-sensei made sure to protect us...!

She got really hurt, she almost died, but another of the demons showed up. They offered to heal Desdemona-sensei but... I had to give them information on Dark Mist in order to do that.
That demon then took something out of the first demon and put it in Desdemona-sensei... I really don't know what it was but I really don't like the idea that a piece of that demon is now in her.

With those two, and the one mentioned on the community, it seems like there's three of these demons here.
And they're planning to go after me eventually. In order to kill me.
They see me as a threat.