Why did Sanada Yukimura defend the Toyotomi family?

Sanada Clan, a new farmer, has been Takeda's interior minister since his grandfather Yukio Yuncun, and he ruled Hushi City, which Takeda Shingen let Yukio Yunlong occupy, in recognition of Sanada Yukitaka's originality. Since then, Sanada Clan has ruled Shennong. And Sanada Masayuki, the father of Xingcun, is also a rare master of ingenuity, with a rare feat of containing 38,000 troops of Tokugawa Hideyoshi with 1,000 troops. However, the historical momentum has not turned because of this. Even without the participation of 38 thousand troops, the battle of Guanyuan still won the Tokugawa family. Since then, Makita and his son have been exiled. Because Sanada Nobuyuki's eldest son, Tokugawa Ieyasu's adopted son, Makita and his son have been looking forward to the chance to fight the Tokugawa shogunate again. Unfortunately, Makita and his son can't wait. Today's Sanada Yukimura is no longer a young soldier at that time, but a warrior who endured the pain of prison. He vowed to show his real name Tian and two generations of generals! God finally gave him such an opportunity, and it was this opportunity that made him go down in history forever in the name of "Japan's first soldier." After Takeda's family died, Sanada Masayuki sent Star Village as a hostage to save Shin-eun. Sanada Yukimura was once a hostage of the Toyotomi family, and a young man whom Hideyoshi loved deeply. He not only changed Feng Chen's surname to Xingcun, but also married Angie, the daughter of Gu Yisi, a punishments department, to Xingcun. It is inevitable to take part in the defense of Osaka, but it is suspected because of my brother's letter. Fortunately, with the strong support of Keiji Goto (Toyotomi's family), he finally showed his talents in the "Osaka Winter Array", especially "Makita Maru" who defeated thousands of troops. The Makita family, which is famous for its ingenuity, is also a master of city building. Their defensive means are enough to make it difficult for thousands of troops to break through the city under the harassment of hundreds of people. Sanada Yukimura's bravery reminds people of Takeda Shinbo and Takeda's family (Takeda Shingen's younger brother died in the battle of Shinagawa Nakajima, and was recognized as the first Japanese fighter at that time, so Changxing named his second son Shinbo, that is, Xingcun). He fulfilled his promise with his wisdom and courage, and the Tokugawa army finally accepted the peace talks under the condition that Osaka was difficult to break. But it also left a painful price, that is, tearing down all the defense facilities in Osaka. This means Osaka will become a ghost town. In order to make the Tokugawa family withdraw their troops, Dianjun (Toyotomi Hideyoshi's concubine and Xiulai's mother) conveyed the conditions for accepting peace talks, so Makita Maru and all the Yugoslav capital facilities were demolished. Sanada Yukimura's painstaking Yugoslav capital plan finally fell through. When the Tokugawa army attacks again, it can only use flesh and blood as Osaka's defense. Sure enough, before long, it was time for another war. When Tokugawa Ieyasu ordered the Toyotomi family to fill the trench around Osaka, Mrs. Lake resolutely refused. This is a symbol of Taige Hideyoshi's dignity, a symbol of Toyotomi's family glory, and the last limit of Osaka Castle. Whose world is this? Xiulai is the successor of Japanese rule! So Tokugawa Ieyasu once again sent troops to attack Osaka, which was the "Osaka Summer Array" in 16 15. Osaka today, no matter how high it is, is not as brilliant as before. Everything in the city is clearly seen by the Tokugawa family. However, the shogunate clearly knew that Osaka still had many obstacles and a fierce war to fight, only because of the existence of Sanada Yukimura. The Sanada Yukimura Ten Warriors are made up of ten samurai death squads with amazing skills. They have shadowy ninjas, light-footed teenagers, mountain thieves who are good at using muskets, and ronin who bravely break into England. They will defend the faith and glory of the soldiers in the name of the "Ten Warriors". Aoyu Cyclops (Data Masamune) troops were cut off one by one in their hands, and batches of Tokugawa troops were defeated. Sanada Yukimura, wearing red armor and antlers helmet, rode a white-haired horse and rushed at the enemy. In this crazy battle, Abarar killed and injured many people. He is like a red ghost who rushes to the fearful crowd. Even after the war, the cyclops had to retreat, and finally the IDA army was repelled. However, groups of Tokugawa troops flooded into Osaka City like a flood, and this red flood was finally submerged. Sanada Yukimura also died of exhaustion, and his blood spilled on the land of Osaka, together with his wisdom, realized his immortal warrior soul. Osaka finally fell. With several gunshots, the giant city was destroyed, and Hideyoshi Tokugawa ordered Hideyoshi (also Hideyoshi's son-in-law) and her mother to be shot when she met her daughter. The hidden trouble of Tokugawa shogunate was finally eliminated, and Tokugawa Ieyasu finally achieved real reunification. Shortly after forcing Data Masamune, the arrogant cyclops, to swear eternal loyalty to Edo, that is, one year after the Battle of Osaka (16 16), the founding general Tokugawa Ieyasu finally passed away.