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. She has sworn to conquer mankind for polluting the oceans, yet her campaign keeps falling flat, and she remains stuck on dry land. Across three comedic slice of life episodes, she tries out an unbreakable video game system, wants a blow-up pool set up in the backyard, and sends a note out to sea in a bottle to spread her conquest. Chizuru tries to play down her extraordinary powers at the beach restaurant, the lifeguard Gorou has an unexpected visit from his mother, Sanae hatches a new scheme to catch Squid Girl, and a policewoman's arrival stirs things up at the shop.