And why she didn't have an umbrella to walk home, and why she eats lunch outside of the classroom.
Author really foreshadowed since the very beginning...
Yes. The 1st panel was our dear boy thinking blondie is such a cheerful girl. Fortune teller girl told him to go to the back of the school at the end of the day in order to set up a confession for herself but it ended up with boy seeing blondie's stuff inside the pool (she is getting builled).
Thanks! Now make sense how that the fortune teller said: "all your misunderstandings will be cleared up", in the end the otaku discovered that the image of the gyaru being always cheerful is not true