Kyouhei Nanbu adores living his life peacefully and quietly, and not without reason! Pamil—a self-proclaimed princess's body double android—appeared in his house from an exhumed(?) coffin, and with her a wild collection of troubles, ranging from simple misunderstandings to kidnappings and more. While Kyouhei tries to keep her under control, the Storner sisters and their Colonel are still lurking in the background, waiting for their opportunity to capture Pamil. Will Kyouhei ever get the return to normalcy that he craves? On top of all of that, the events that happened on Valentine's Day are still weighing heavily on all involved. Will Kyouhei, Sanae, and Pamil find an answer to the question in their hearts? And what does the word "family" really mean for them?