Ryuuto Kashima, a reserved and inexperienced high school student, finds himself unexpectedly asked out by Runa Shirakawa, a popular and socially adept girl with a reputation for having dated multiple boys. Despite their contrasting personalities and life experiences, the two begin a romantic relationship. Ryuuto, who has never been in a relationship before, struggles with self-doubt and insecurity, often questioning why someone like Runa would choose him. Runa, on the other hand, is open about her past relationships but seeks a genuine connection, finding Ryuuto’s sincerity and kindness refreshing.

As their relationship progresses, the series explores the dynamics of their interactions, highlighting the challenges of navigating a romance between two individuals with vastly different levels of experience. Ryuuto’s lack of confidence and overthinking often lead to misunderstandings, while Runa’s straightforward and carefree demeanor sometimes clashes with his more cautious approach. The narrative delves into themes of trust, communication, and personal growth as both characters learn to understand and support each other.

Supporting characters, such as Ryuuto’s friends and Runa’s acquaintances, provide additional perspectives on relationships and social dynamics, adding depth to the story. The series balances lighthearted moments with more introspective scenes, portraying the complexities of young love and the process of building a meaningful connection. Through their journey, Ryuuto and Runa gradually overcome their insecurities and develop a deeper bond, showcasing the evolving nature of their relationship.