Taking place 75 years after the first series, Steel Angel Kurumi 2 brings the Steel Angels in a new mis-adventure. High school student and aspiring cellist Nako Kagura accidentally discovers and kisses Kurumi Mk. II at her home, thus making her Kurumi's master. But things go awry as Nako's best friend Uruka gets jealous and tries anything - including her father's army of top-secret mecha - to destroy Kurumi and win back Nako. Things get more out of control when Saki Mk. II is awakened by Uruka, and Karinka Mk. II joins in to steal Nako away from Kurumi. (Source: ANN)

Haruno Kasumi is a fourth-grader. Her parents are zoologists who went over to Africa to carry out their research studies. In order to see off her parents, Kasumi arrived at Kasumi Town. In the middle of the town lies an enormous mansion surrounded by the forest. The mansion belongs to the Kasumi household, the family in which Kasumi will be lodging in and taken care of. There is a mysterious aura about the mansion and Kasumi discovers a series of talking appliances. The Kasumi family refers to these creatures as "Henamon". In return for living in with the family, Kasumi will be helping out with the household chores such as cooking and washing. Surrounded by various interesting characters, Kasumi begins a new chapter in her life.

A young man passes a pet shop on his way home, and seeing a kappa in the window, decides to buy it on a whim. He brings the creature home, and names him Kaatan. He's never owned a kappa before, so he relies heavily on a book he purchased on the subject of raising and training kappa. The books gives several good tips for bringing up a smart and well behaved kappa, and it all seems very simple. Unfortunately, putting these techniques into practice and actually making them work is not quite as easy as the book implies. Kaatan seems to understand things at first, but usually ends up either forgetting what he's learned, or isn't interested in learning in the first place. However, this particular young man has a lot of patience, and continues his possibly fruitless effort to raise Kaatan into a pet he can be proud of.

The OVA will be bundled with the 7th volume of the manga, scheduled to ship on August 26, 2015. It will be a sea bathing episode. (Source: MAL News)