"Adults Dunno How to Love!" is a romantic comedy series that explores the complexities of adult relationships through the lens of its central characters, who navigate love, misunderstandings, and personal growth. The story revolves around two main protagonists: Haruto, a reserved and somewhat socially awkward office worker, and Aoi, a confident and outgoing freelance illustrator. Their paths cross when Haruto, struggling with his lack of romantic experience, seeks advice from Aoi after a chance encounter at a café. Despite their contrasting personalities, the two form an unlikely bond as they attempt to understand the nuances of love and relationships.

The narrative delves into their evolving dynamic, highlighting the challenges they face as adults who are inexperienced in matters of the heart. Haruto’s insecurities and overthinking often lead to comedic misunderstandings, while Aoi’s seemingly carefree attitude masks her own vulnerabilities and past heartbreaks. As they spend more time together, their interactions reveal deeper layers of their personalities, creating a blend of humor and emotional depth.

Supporting characters, such as Haruto’s childhood friend and coworker, Rina, and Aoi’s older brother, Kenta, add further dimension to the story. Rina harbors unspoken feelings for Haruto, which complicates their friendship, while Kenta serves as a protective yet meddling figure in Aoi’s life. These relationships contribute to the series’ exploration of themes like unrequited love, self-discovery, and the importance of communication in fostering meaningful connections.

The plot progresses through a series of episodic yet interconnected events, ranging from awkward dates and workplace dilemmas to heartfelt conversations and moments of introspection. The series balances lighthearted humor with poignant reflections on the challenges of adult life, making it relatable to audiences who have experienced similar struggles in their own relationships. By the end, "Adults Dunno How to Love!" offers a thoughtful portrayal of how love can be both confusing and rewarding, even for those who feel they are starting late or ill-equipped to navigate it.