According to Anime News Network , the creative team behind this specific episode included: : Toshikatsu Tokoro. Script : Hitomi Amamiya. Animation Directors : Jun Hanzawa and Shou Sugai. Eyecatch Illustrator : Hiro Kanzaki.
For a deeper look into the series' reception and its place within the isekai genre, check out this retrospective analysis:
: The episode is noted for its high-quality animation during the pool scenes, featuring various main and supporting characters in themed swimwear. Production Credits Astarottes Toy Episode 9
The episode centers on a trip to a massive indoor pool resort within the demon world. While it serves as a typical fan-service showcase, the narrative focuses on a sudden change in Naoya's behavior.
Episode 9 of (Astarotte no Omocha!), titled "Slight Fever Backslash," is widely remembered as the "swimsuit episode," blending the series' characteristic ecchi elements with a rare moment of emotional vulnerability for the protagonist, Naoya Tohara. Episode Plot Summary According to Anime News Network , the creative
: The episode concludes with a shift in the group dynamic, as the female leads must find a way to stabilize his condition, often through the series' signature suggestive "mana transfer" themes. Key Character Moments
: Naoya begins acting strangely, showing signs of extreme irritability and physical exhaustion, which the characters jokingly refer to as "harem sickness" or frustration. Eyecatch Illustrator : Hiro Kanzaki
: It is eventually discovered that Naoya is suffering from a "mana deficiency." Because he is a human living in a high-mana world and is constantly around succubus energy, his body is under intense strain.