Yuka Nitta

As Akio Nitta's devoted and slightly immature younger sister, she maintains an unusually tight bond with her brother. Although she initially enrolls at Meisei Academy under the guise of spying on him, her mission is soon complicated by a burgeoning crush on Tatsuya. Beyond her playful antics, she possesses a remarkable talent for scouting, demonstrating a sharp ability to observe and analyze the intricacies of baseball players' performances.