Cat-chan's Laughing Muscles! / Five Child Household

The first part is about a humanoid cat who trains his abdominal muscles, but he, unfortunately, broke them when training using a basketball, so he shared the muscles with his grandmother in order to recoup his ab losses. The second part is about a television crew trying to film the quintuplets of a family by all means and at all costs, who appear to be far, far more hyperactive than usual.