When We're in Love Vol. 4 (Kodansha, 2021)

Although the fireworks festival brought Nanase and Hana-kun's hearts closer together, the distance between them remains about the same. Except for one thing: Hana-kun might be (a tiny bit) into Nanase! And just as the school festival is kicking into high gear, Hana-kun pulls her aside and says, ""We need to talk."" Could a startling confession be on the horizon?!