An extraterrestrial visitor from the planet Yuri has taken up residence on Misuzu's rooftop with a singular mission: transforming Earth into a yuri paradise. Naoko-san's methods of conquest involve spreading romantic affection between girls, much to Misuzu's constant exasperation. The junior high student finds herself caught between her alien houseguest's relentless schemes and the chaos that inevitably follows. When whispers of a prowler in their neighborhood reach them, Naoko-san sees an opportunity to involve Misuzu in yet another one of her plans. Together they embark on an investigation that's equal parts ridiculous and absurd, with Naoko-san's alien logic clashing against Misuzu's resigned common sense at every turn. This OVA leans hard into comedic absurdity, treating its outlandish premise with complete sincerity. The humor stems from the contrasting personalities of an earnest alien invader and a perpetually annoyed girl just trying to live her life. Viewers looking for lighthearted silliness grounded in genuine character dynamics will find plenty to laugh at here.