On Earth, a year has passed since the unofficial friendly visit of Princess Lala Satalin Devylyuk began. The daughter of the ruler of all galaxies left her home to avoid persistent suitors, and on the very first day on the new planet she met true love in the form of Rito Yuki, a simple Japanese schoolboy, of course. Some sources claim that the whole thing is due to a misunderstanding, but women's intuition never errs in such matters; class and cultural barriers are no fear to it! Even Rito himself admitted that his heart is already given to a classmate and longtime friend Harune Sairenzi. Whatever you say, Lala has a far more comprehensive and high‑quality education, one of whose principles states: princesses always get what they want! Time passed, problems arose and were solved; Earth became a popular vacation spot in the galaxy, and an entire alien colony formed in the Yuki family home: Lala, her sisters Nana and Momo, robot Peke, and the sentient flower Selina. One could also add the attractive hunter Yami, who arrived after the protagonist's head and ended up staying for… uh… scientific purposes. Seeing such attention, the students of Saian School, where almost all "high guests" transferred, drew their own conclusions. Gradually Rito realized that, stepping onto the interplanetary level, one must broaden one's worldview, i.e., try oneself in the difficult role of a harem master. The Masaki family has long proven that a galactic prince cannot be otherwise!