The author really amp'd up Ranna's sexiness all the way to 11 this chapter. Look at pg. 16: I'm supposed to believe that's a high-school aged girl? She looks like a busty super-model in her late twenties.
Holy shit, it's good to see Ranna speak her mind like this to Rokudou and show real emotion. Is this the first time Ranna got really upset with him and not just fawning over him, then letting things go so easily? I don't recall.
@iamnormal yes but it was either when they became good or found someone they truly liked besides roku. The fact the charm is making her worry so much about someone may be affecting her actual mind with this constant thought making her slowly good.