"Iya na Kao Sare Nagara Opantsu Misete Moraitai 2" is a short-form anime series that continues the premise established in its predecessor. The narrative revolves around a group of female characters who find themselves in situations where they are compelled to show their underwear, often against their will, due to various comedic or awkward circumstances. The series employs a slice-of-life format, with each episode presenting self-contained scenarios that highlight the characters' reactions and interactions.

The main characters include a diverse cast of girls, each with distinct personalities and traits. Their interactions are driven by the recurring theme of being asked or forced to reveal their underwear, which serves as the central comedic device. The situations range from accidental wardrobe malfunctions to deliberate requests, often leading to humorous or exaggerated outcomes. Despite the repetitive nature of the premise, the series explores different settings and contexts, such as school life, casual outings, and unexpected encounters, to maintain variety.

The plot does not follow a continuous storyline but instead focuses on episodic vignettes that emphasize the comedic and lighthearted tone of the series. The characters' reactions to the situations they find themselves in are often exaggerated for comedic effect, with a mix of embarrassment, frustration, and occasional acceptance. The series relies heavily on visual gags and situational humor, with minimal dialogue or character development.

Overall, "Iya na Kao Sare Nagara Opantsu Misete Moraitai 2" is a straightforward continuation of its predecessor, maintaining the same comedic focus and episodic structure. It appeals to audiences seeking light-hearted, absurd humor centered around its recurring theme, without delving into complex narratives or character arcs.