Having lost her mother at a young age, Misha Takanashi, a second grader with Russian blood, now lives with her Japanese father. Tsubame Kamoi, formerly a Self‐Defense Force officer, comes to the Takanashi household as a housekeeper. This is a home comedy where Kamoi, a hardcore lolicon, attempts to get near Misha as she tries to fight against her.

[Source: MyAnimeList News]

In the new OVA, Misha and the others have made it to the latest hot spring theme park that people are buzzing about. Misha got tickets from Midori, and she invited "Washi-Washi" and Yui. Of course, Tsubame shows up there…

Also, one day, Misha happens to watch an anime with a blundering maid, and mutters, "Anyone can be a maid." Hearing this, Tsubame gets in a tiff with her, and Misha utters without thinking, "I'll become a maid!""

[Source: Anime News Network]