Goshuushou-sama Ninomiya-kun  

Good Luck! Ninomiya-kun, My Condolences, Niniomiya-kun, My Heartfelt Sympathy, Ninomiya-kun, ninomiya-kun, Нашите съболезнования, Ниномия, Примите наши соболезнования, Ниномия-кун, ご愁傷さま二ノ宮くん

Shungo Ninomiya is a typical high school student who lives with his older sister Ryoko at home. However, things take an unexpected turn when a cute girl named Mayu Tsukimura lands on their campus in a military helicopter. It turns out that Ryoko sent her and her brother Mikihiro to live at the Ninomiya household. The siblings are special as they are succubi and incubi respectively, and Mayu is crippled with androphobia. Shungo must help her overcome this fear at his sister's behest. Ryoko plans to force Mayu to get closer to him by employing questionable methods such as sharing the same bed and bathing together. The situation becomes more complicated when Reika Houjou, the student council president, arrives as their new maid. She will stop at nothing to thwart Shungo and Mayu's sexually-geared training. As a result, Shungo's ordinary life is about to be thrown into chaos.