I don't think the Japanese Warring States period was such a difficult time.

 Over the past 100 years during the Warring States period, the population has grown from about 6.5 million to 12.2 million.I thought it would be a little different from Joseon's peaceful times...I think it was a period of unexpected improvement. The opening of the Warring States Period - The Rebellion of the Middle Ages in Japan ended the politics of the Emperor and nobles, and samurai held the shogunate to rule. The Muromachi Shogunate of the Ashikaga family, the second shogunate in Japan, has already begun to lose power due to terminal symptoms. Nevertheless, politics celebrated the national treasury and announced the Deokjeongryeong several times, but it did not have much effect. First of all, among the three families of the Shogunate, the Hatakeyama and Shiba families, which are considered the prime ministers of the Shogunate, had internal strife and weakened their power. Only the Hosogawa family among the three government-controlled families became normal. On the other hand, among the four families of Akamatsu, Itshiki, Yamana, and Kyokoku, who took turns in criminal duties and security in Kyoto and abroad, Yamana became stronger, resulting in the appeal of the family and feud. (The Akamatsu family killed the Shogun, and the Yamanaga clan took over the Akamatsu family's territory.) In this situation, an inheritance fight broke out in the Hatakeyama family, one of the government officials, and Hosokawa and Yamana became completely estranged by supporting others. And this time, there was a battle of inheritance between the shogun's family. Yoshimi, the younger brother of Yoshimasa, the eighth shogun, and Yoshihisa, the late son of Tomiko Hino, the wife of Shogun, clashed, and Yoshihisa tried to kill Yoshimi. In response, influential defenders (local presidents) opposed it and brought troops to Seoul to fight against it. Eventually, the killing failed, but Kyoto still had troops. In January 1467, Hatakeyama's inheritance dispute broke out in Kyoto in an all-out war. This led to the beginning of Onin's In May, this expanded to a fight between Hosokawa and Yamanabe. 160,000 people from 24 countries in the East and 110,000 people from 20 countries in the West fought in Kyoto, turning Kyoto into ashes... The fight spread to the countryside during a series of ups and downs. In 1473, when Hosokawa Mochitoyo and Yamana Katsumoto, the leaders of both armies, died, the war became boring. When Yoshihisa's mother and son, who were in the Western Army, joined the Eastern Army, Yoshihimi, who was in the Eastern Army, was uncomfortable, and the purpose of the war became ambiguous, such as moving to the Western Army. The following year, Hosokawa and Yamana reconciled, and the remaining daimyo in 1477 also returned home in peace. This is how the 11-year war ends. The war was over, but the shogunate's power was extinguished. The Shogunate became a common daimyo that occupied only the Yamashiro Kingdom in Kyoto. The dissolution of shogunate power also affected the fate of the daimyo who were devastated by the war. It often happened that the guards who ruled England became the masters of England, and the guardians who were its agents or influential people in England became the masters of England. This marks the beginning of the Warring States Period.