"Someone go call Inukai-sensei!"
At this point I already knew I have been proven wrong rigth in the next chapter of the one I come up with my theory. LOL
I focused so much in her design that I didn't think as much as I should have as to why Sumire and Tamarai are so close. Damn.
Welp, one of my theories was wrong, let's see the other. Theorizing is fun, anyway. ~