Raichi!!

After his father's dojo gets crushed by a man, a boy named Raichi aims to become the strongest fighter. Years later after becoming the champion, he still isn't satisfied. He finds an underground fighting ring where fighters have special abilities. The underground champion is the man who crushed the dojo! However Raichi gets defeated before he could even face him. A strange creature offers Raichi the ability to heal wounds so he can fight against those special humans. It worked ... but he's been turned into a girl too!