After her father gets remarried, Mao feels like she no longer has a home and ends up moving in with Hiro, her childhood friend. Mao falls in love with Hiro, who is kind and takes care of her. Aiming to become self-reliant she gets a part-time job with Daiki, who is home for the summer break. Hiro's been acting strange, and so, at the fireworks festival Mao inadvertently ends up asking him if he likes her! Emotions are stirring up for everyone, including Hiro's little brother Daiki.