Рюитиро Курода

Кумико's grandfather and the head of the Oedo clan. A kind old man, greatly loving his granddaughter and supporting her desire to teach children. He is always ready to support Kumiko and give her advice. At the same time, there is a power behind him that he no longer needs to prove to anyone. A single word from him is enough to gather a large number of gangsters under his command. Among the yakuza, he is known by the nickname "The Rising Dragon".