I like how Tsukasa is a pretty plain cut case for a middle schooler, having fun and stuff without much care for anything else (she's even terrible at her studies for the sake of her club activities), and then you have Kotooka and Washio doing some 57D reverse chess mindgames "I know how you feel about me" "I know you know about how I feel about about you" and stabbing at one another (for different reasons) with words and actions.
I know there have been several cases of mangas/stories were kids act and think in a more mature way, but it just doesn't feel quite right in this one so far.