Dr. Tofu Ono runs the local chiropractic clinic and has become the go-to guy whenever Akane or Ranma need treatment for injuries sustained during their constant martial arts brawls. Despite never being shown actually training, he's genuinely knowledgeable about martial arts techniques and has helped Ranma figure out countermeasures to some seriously nasty moves—like Happosai's moxibustion technique and Cologne's full body cat's tongue attack.
His real weakness, though, is Kasumi Tendo. The moment she walks into his office, his glasses fog up and he gets so flustered that he's actually injured patients while distracted by her presence. It's pretty obvious to everyone that he's completely smitten.
Dr. Tofu is well-respected in the community, with a solid client base that skews toward older folks. He's had a rotating cast of assistants over the years, including both Genma Saotome and Shampoo. One of his quirks is his skeleton, Betty, which he carries around and treats like a companion—talking to it, moving it around like it's a real person.
Akane had a crush on him at one point, and he was genuinely supportive of her, offering advice when she needed it. These days he's mostly known for his medical expertise and his very obvious, very inconvenient feelings for Kasumi.
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