Casting follows the source material directly, using Japanese voice actors for all Japanese roles while introducing Palau characters only as needed for the diving shop storyline in a manner that fits the existing premise organically. Creator statements from Zero-G, Saber Works, and director Shinji Takamatsu contain no activist framing, and audience reception focuses solely on comedy quality with neither backlash nor praise tied to identity politics. Specific episode plots reinforce this approach through personal and humorous conflicts rather than ideological ones.

Examples include summer plans, a family passport retrieval involving a stalker, the group trip to Palau for diving shop work, a TV special filming, Kohei assisting Aina's crush on Iori, and Chisa clashing with her mother Sayaka over career goals in diving during Episode 7—all presented as individual emotional or comedic matters. The key art showing Iori and Chisa in swimwear against a tropical backdrop aligns with the series' long-standing fanservice aesthetic and in-story setting, confirming the absence of any forced thematic shifts.