On Earth, the cutest animals are actually spies from outer space, sent to secretly invade the planet under the guise of domestic pets. The story centers on Chikuwa, an adorable Shiba Inu‑like creature who is an extraterrestrial envoy tasked with infiltrating human society. Chikuwa’s mission is to collect a special energy called “kawaene,” which is generated whenever humans feel affection for cute beings. He lives with the Inumiya family: the lively young girl Madoka, her brother Banjirou, their mother Nene, and other relatives. Despite his orders to remain an impartial invader, Chikuwa grows genuinely attached to his human companions, leading to a series of comedic and heartwarming episodes. He tries to help a classmate named Genta with his first love, accidentally uses a gadget that lets him hear the true feelings of anyone he touches, and interacts with fellow alien spies such as the Geppler Alien. Over time, the boundaries between his secret mission and his desire to protect his new family become blurred, creating a story filled with tender moments, playful mischief, and gentle satire on the way people adore cute things. The manga is an ongoing, light‑hearted comedy that celebrates the simple joy of being loved, while exploring the idea that sometimes an invasion can lead to genuine friendship.