Signing in Since the Warring States Period

My name is Lu Yu, and I am a Blue Star person. But I never thought that I would travel through time and become Uchiha Madara's brother, Uchiha Rikuyu. Fortunately, I got a sign-in system to help me gain a foothold in the Warring States Period. The general trend of the world is that if it has been divided for a long time, it must be united, and if it has been united for a long time, it must be divided. In ancient times, Kaguya unified the ninja world and divided it into Otsutsuki Hagoromo and Otsutsuki Hamura. In ancient times, Indra and Asura had constant grievances. In the early days of the Warring States Period, Uchiha, Senju, Kaguya, and Hinata competed for hegemony over the Land of Fire. At the end of the Warring States Period, I, Uchiha Lu Yu, will lead Uchiha to greatness! We are happy to meet each other over a pot of turbid wine, and many things in ancient and modern times can be discussed with laughter. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.