Yotarou

与太郎

Yotaro is a young, frail boy who cannot go outside, despite his mother's efforts and attempts to make him do so. Sickly and easily exhausted, Yotaro remains in bed all day and refuses to engage in any activity—though he harbors one wish: to own a panda of his very own. One day, Yotaro's wish comes true when his mother finds a wandering Genma (in panda form) and brings him home. Initially, Genma is hesitant, but upon discovering how well he is treated (particularly regarding food), he decides to stay in panda form and lounge around the household.
A worried Ranma eventually locates Genma lounging at the house and, in female form, enters where she is disgusted by the laziness of both Genma and Yotaro. At first, Ranma attempts to take Genma back by force but ultimately resorts to subtler methods, trying to tempt Yotaro to go outside. During this time, Ranma discovers that Yotaro is not actually sickly; rather, he is extremely lazy and unwilling to leave the house. It is only when Ranma forcibly kidnaps Genma-panda from the house that Yotaro goes outside, chasing Ranma all day back to the Tendo dojo.
Yotaro appears sickly at first, but it is eventually realized that his illness is merely a ruse to cover up his laziness and reluctance to go outside. However, he is a very energetic boy and is not truly willing to give up what he has so easily.