Humans have been polluting the ocean for a long time, carelessly pouring their garbage and desecrating the waters that many creatures call home. The denizens of the sea have suffered at their poisoning hands. Finally, one certain squid has had enough and vows to punish the humans' selfish actions. Possessing all the fearsome abilities of a squid such as powerful hair-tentacles, the ability to spit ink, and even use bioluminescence at will, Ika Musume takes it upon herself to rise from the depths of the ocean and exact revenge upon humanity! She surfaces at a certain Lemon Beach House, a restaurant managed by the sisters Eiko and Chizuru Aizawa. Thinking them to be an easy first step toward world domination, she immediately declares war against them, only to find out that she is, quite literally, a fish out of water! To make things worse, she destroys a part of a wall of the beach house in an attempt to flaunt her squiddy superiority and is consequently forced into becoming a waitress to pay the repair costs. Beached for the time being after tasting a thorough defeat at the hands of the Aizawa sisters, Ika Musume is forced to put her plans for world domination on hold. Despite these setbacks, Ika Musume soon finds herself right at home in her unexpected position as Lemon Beach House's newest employee. Wacky and hilarious, Shinryaku! Ika Musume follows her brand new life on the surface as she makes precious memories and meet lots of new people. With her newfound acquaintances, Ika Musume is looking to take the world by storm, one squid ink spaghetti at a time! [Written by MAL Rewrite]

After regaining her squid-like abilities, Ika Musume plans to resume her self-appointed mission to destroy all of humanity. However, her carefree job as a waitress in the Lemon beach house meant she cannot help but laze around during her spare time! On top of that, she is saddled with many problems, such as being pursued by a group of alien-obsessed individuals and catching the interest of a crazy girl. Picking up after the conclusion of the first season, Shinryaku!? Ika Musume follows the hilarious life of Ika Musume as she plots her next invasion of the surface world. [Written by MAL Rewrite]

In future Japan, in a time when android housekeepers have become commonplace, society strictly abides by the Three Laws of Robotics, which all androids must follow. Under the influence of the Robot Ethics Committee, androids are treated the same way as lesser technology, such as household appliances. However, a minority with an adoration for androids exists, categorized as "android-holics," and are shunned by the general public. Rikuo Sakisaka was raised to accept society's precept about androids, and is perfectly aware that they are not human. That is, until the day he discovers a strange message buried within the activity logs of his household android, Sammy. This leads him to Eve no Jikan, a cafe with only one rule that its patrons must adhere to: there must be no distinction made between humans and androids. Curiosity drives Rikuo to learn more about the shop, and he attempts to unearth the reason behind Sammy's peculiar behavior. [Written by MAL Rewrite]

With the threat of the Holy Grail War no longer looming over Fuyuki City, its inhabitants can finally enjoy a time of peace. Now that all of the Masters and Servants have adjusted to their new mundane lives, Shirou has taken it upon himself to cook for his household and show Saber the wonders of modern cuisine. Every day, he ventures into the marketplace to see what kind of different meals he can cook up with unique ingredients and a limited budget. However, his legendary skills often attract uninvited guests from all over the city, so there is never a dull moment at dinner with the Emiya family. As his guests entertain themselves in the living room, Shirou walks through the step-by-step process of creating some of his favorite meals. With delicacies such as his savory New Year soba with shrimp tempura, steamy foil-baked salmon, and cheesy bamboo shoot gratin, everything is up for grabs on his menu. Itadakimasu! [Written by MAL Rewrite]