The comedy is pure reference velocity, Lovecraft, tokusatsu, dating sims, whatever, fired at you so fast that even if one joke whiffs, three more land while you're still laughing. Mahiro's exhausted deadpan as cosmic horrors treat him like a side character in his own harem is the only tone that could survive this much chaos. The show doesn't care if you get every reference because it's funny enough on the surface, sharp enough underneath, and self-aware enough to never overstay its welcome in twelve episodes.
Mahiro has a problem: the beautiful girl claiming to protect him is actually a lovesick cosmic entity obsessed with romance novels and terrible puns. Nyaruko insists she's there to shield him from otherworldly threats, but honestly, her constant flirting and physical affection might be more dangerous than whatever alien horrors she claims are hunting them both. As reality-warping beings from beyond human comprehension start showing up at his house, Mahiro struggles to maintain a normal life. School feels impossible when your protector keeps derailing class with her chaotic energy and supernatural hijinks. Every day brings new monsters, new chaos, and new opportunities for Nyaruko to demonstrate her complete lack of personal space. This is sci-fi comedy that treats cosmic horror as the perfect setup for romantic mishaps. Nyaruko's relentless enthusiasm crashes against Mahiro's desperate desire for peace, creating comedy through constant collision. The show embraces absurdity completely, mixing sentient mythology with slice-of-life humor and unapologetic silliness. It rewards viewers who enjoy their laughs loud and their romance complicated.