"Hey! Your cat just ran straight into my heart! Do you want to come in and catch it?" This is the story of a grumpy, quiet high school boy whose peaceful life is completely turned upside down when a petite girl and her adorable pet suddenly burst into his world. Their encounter sparks countless hilarious and heartwarming situations. Where will the romance between a tiny 150 cm girl and a towering 180 cm boy lead? Can a serious, aloof guy ever find common ground with a mischievous, playful girl? Find out in this sweet and charming youth romance!