Rokka

Rokka Masks are a type of youkai that are said to live in the mountains of Japan. They are said to be very powerful and dangerous, and they are often depicted as wearing masks that cover their faces. In the anime Natsume's Book of Friends Season 4, Rokka Masks play a significant role. They are the main antagonists of the season, and they are responsible for a number of attacks on humans. The Rokka Masks are led by a powerful youkai named Rokka. Rokka is a very skilled fighter, and he is determined to use his power to take over the world. He is assisted by a group of other Rokka Masks, who are all very strong and dangerous. The Rokka Masks are a formidable enemy, and they pose a serious threat to Natsume and his friends. However, Natsume is determined to stop them, and he is willing to risk his own life to do so. The battle between Natsume and the Rokka Masks is a long and difficult one, but in the end, Natsume is victorious. He is able to defeat Rokka and his followers, and he saves the world from their evil plans. The story of Natsu