Mizudati Shizuku is an ordinary senior high‑school student. Well, not quite ordinary. For her studying comes first and again studying. More precisely, it"s not just first but the only priority. She has a dream she strives toward, and for it she devotes herself entirely to textbooks, forgetting friends and personal life. But not everything in life goes as smoothly as one wishes. After all, again because of studying (a grant for new teaching materials), Shizuku meets the "Ghost First‑Year" and her desk neighbor Yoshida Haru, who only needed to hand over printouts. From that meeting everything in her life will turn upside down, for it"s no wonder Haru is called the "Walking Disaster."