Ittoki Sakuraba fails to understand why his mother, his uncle, and his childhood friend, Kousetsu, seem to take his security so seriously. Kousetsu constantly follows and observes him with no regard for his privacy, focusing only on keeping him safe every waking moment. But the consistent hounding starts making sense when an adorable second-year student at his high school, Satomi Tsubaki, asks Ittoki out on a date. Though initially innocent, Tsubaki's true intentions soon become apparent when Ittoki visits her house; she plans to assassinate him, and she is not alone. Surprisingly, the ones who come to his aid are his uncle and Kousetsu—donning their dark and deadly ninja attire. After Ittoki is escorted to safety, his mother reveals the truth: he is the 19th heir to a noble clan of ninjas known as the Iga, and the target of assassination by their rival clan, the Koga. In order to protect himself against this new threat, Ittoki must hone his skills at the only ninja academy remaining in Japan: the Kokuten Ninja Academy.

Five years ago, while battling an alien force known as the Mimesis, Dannar pilot Goh Saruwatari first met Anna Aoi. Today, on the day of their wedding, the ceremony is interrupted when the Mimesis strike again. As Goh struggles in his battle against the alien threat, Anna stumbles upon a top secret robot known as the Neo-Okusaer and uses it as a last-resort to save her fiancee. At that moment, Dannar and Neo-Okusaer merge to become the mighty robot Godannar. (Source: ANN)

Defying the odds, middle school student Shion Yasuoka is becoming a rising star of the professional shogi world. Despite losing her family at a young age and being unable to speak due to the trauma, in her loving adoptive family and at the shogi association, she has found the necessary emotional support to move on with her life and very demanding career. Her talent attracts the attention of Satoru Hani, a successful businessman and brother of the current Meijin—the title given to the defending champion of Japan's most prestigious shogi tournament. He decides to organize a tournament open to both men and women, including professional and amateur players, and urges Shion to participate in the competition. However, Satoru seems to know a lot about Shion's troubled past, and his actions bring suspicion from Shion's friend Ayumi Saitou and the police—who are still investigating the death of Shion's loved ones. As the end of Satoru's tournament approaches, Shion starts remembering events related to the night when she lost everything and will have to show her mental fortitude to defeat her opponents and foil the plans of the culprits who ruined her life.

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.