Squid Girl stops trying to invade and just... exists in the spaces between the manga chapters, hanging out at the house like she belongs there. The comedy gets looser, meaner to her in the best way, because there's no plot to service, just three episodes of watching a squid alien get increasingly comfortable being useless at conquest. It's the show saying: forget the premise, this is just about a weird girl living with people who tolerate her, and that's enough.
Squid Girl's invasion of the surface world continues with these bonus episodes bundled alongside the manga releases. Still stationed at the Aizawa sisters' restaurant and still somehow working as their waitress, the tentacled invader finds her grand plans for conquest repeatedly derailed by the simple pleasures of daily life. She spends her days caught between grandiose declarations of humanity's coming doom and the reality of befriending the very people she's supposed to be conquering. Her squidly nature makes her equally prone to getting distracted by a good movie, losing herself in manga, or developing genuine affection for the people around her. These OVA episodes deliver more of the same comedic chaos that defined the series: absurd situations played completely straight, innocent misunderstandings, and a protagonist whose greatest enemy isn't human resistance but her own good-hearted tendencies. If you've already fallen for Squid Girl's peculiar charm, these episodes offer more moments of her endearing struggle between world domination and just wanting to fit in.