Ok, so... it's going worse than I thought. Just, ew. Ew ew ew. I pasted the beginning of the burning trainwreck below.

No one noticed Kirumi's odd behavior at first. I mean, with the shock of being forced into a killing game and being bossed around by a teddy bear, that was the last thing on everyone's mind. She was just... an afterthought, really. This ignorance just increased, especially after the first set of murders.
Oh, Rantaro and Kaede, two of their fellow 'classmates.' Dead. Everyone was down on their dumps. Especially Shuichi, she noticed. She would often clean his room and do his laundry without asking. She could tell he didn't really pay mind to it through his greiving.

But, that's not the point of the story, huh? Shuichi's mourning of his love interest is not our central point.

All Kirumi really did was ask for requests, clean, and cook. Ocasionally, she would have to set Kokichi straight. That was about it: Rinse, wash, repeat. The only interruption on these days was Ryoma Hoshi, the Ultimate Tennis Pro. Oh, Ryoma. When she first tried approaching him, he had said something along the lines of "You shouldn't be around me, I'm a murderer."