I am Honoka Kimura, a plain and inconspicuous first-year high school student. I secretly have feelings for Aoi Mizushima, who is always with Yurina Hiyama. Whenever I see them together, I feel a sense of frustration... Why is Hiyama-san showing such a smile to someone other than me...? Wait, am I really thinking about Hiyama-san!? This is a love? comedy that explores the relationship between the protagonist, Kimura-san, and her rival, Hiyama-san.