I don't really know what a kotatsu feels like, but it does look comfortable.
Being captured by it doesn't sound half bad...
Also, great ending. I suppose the only way to save people trapped by the kotatsu is to forcibly pull them away from it's dastardly clutches.
No, not collecting donations. Just-- help them to bed or get them some water. Sexy times if you're both willing. Help out, is all I'm saying...