Just read this for the first time. Cute. I am not generally a tsundere fan, but this worked for me.
It did contain my least-favorite plot device, though: The bit about the dorm being sold/destroyed and Komari being all wound up about it, and it could've been cleared up in about 15 seconds if any one of the other dorm residents had simply mentioned it.
Nonetheless, I liked it overall. Very cute and fluffy.