To Akiho's horror, Haruka's male classmate Hoshikawa begins to take a rather unhealthy interest in her boyfriend, plunging her into a state of panic every time she sees them together. During their school's summer sports festival Haruka is determined to prove himself a cool guy to Akiho by participating in the baseball tournaments, only to accidentally hit Hoshikawa (to the latter's enjoyment) in a sensitive spot with one of his batting attempts, and to find out in the end that Akiho does not mind the result as long as it is done for her sake.