Imagawa Sadayo was one of the most outstanding figures of his era. Alongside Kusunoki Masashige and Kitabatake Chikafusa, he was considered one of the greatest generals and strategists of his time. In addition to his military talents, Sadayo was also a poet and historian, and his literary abilities earned him a prominent place at court and in scholarly circles.
The Imagawa family belonged to a junior branch of the Ashikaga clan. The name “Imagawa” was taken from their estate in Mikawa Province. Sadayo’s father supported Shogun Ashikaga Takauji and was rewarded with the position of governor in Suruga Province. The family settled there and eventually intermarried with members of the court nobility.
Sadayo’s military career began during the conflict between the Northern and Southern Courts. He supported the Northern Court and, in 1361, defeated Hosokawa Kiyouji in the Battle of Yoshino. After returning to Kyoto, Sadayo became a Buddhist monk, taking the name Ryoshun and dedicating himself to religion.
By 1370, the bakufu had lost control over most of Kyushu Island and sent Ryoshun there as a military governor. His mission was to pacify the rebellious territories, a task to which he devoted the next ten years of his life. Despite his military duties, Ryoshun continued to write and maintained correspondence with his teacher, Nijō Yoshimoto.
In 1395, Shogun Ashikaga Yoshimitsu was informed that Ryoshun had gained too much influence and might be plotting a rebellion. As a result, he was recalled from Kyushu and took up the hereditary position of governor in Suruga, where he spent the rest of his years devoted to poetry and literature.
Ryoshun authored several works and documents, including Michiyukiburi, a travel diary with poems; the historical chronicle Nan Taiheiki; and The Precepts (Imagawa Letters on the Wall), written in 1412 for his younger brother Tadaaki. The Precepts, also known as The Imagawa Wall Inscriptions, were revered and studied as a moral code up until World War II. During the Edo period, this text was taught in all temple schools.
Written in the kanbun style, The Precepts established the classical ideal of the warrior — one who unites martial spirit with scholarly learning. Losing one inevitably means losing both. As a devoted Buddhist, Ryoshun condemned meaningless self-sacrifice, yet as a member of the warrior class, he held deep respect for the way of the warrior. As a Confucian, he quoted Chinese classics, emphasized filial piety, and underscored loyalty and duty to one’s lord. In Ryoshun, the warrior ideal was perhaps realized in its perfect balance.
See also
-
Tachibana Dosetsu
Tachibana Dōsetsu is the name by which Hetsugi Akitsura is more widely known; the name of this lineage is also found read as Hekki or Bekki. For a long period, Akitsura served the Ōtomo clan, the daimyō of Bungo Province, and took part in wars against the Ōuchi family, the principal enemies of the Ōtomo in northwestern Kyushu. In the 1560s, Akitsura seized the castle of the Tachibana clan, which had rebelled against the Ōtomo, and thereafter adopted the surname Tachibana. Around the same time, he took Buddhist vows and assumed the name Dōsetsu, which means “Snowy Road.”
-
Taira no Masakado
Taira no Masakado embodied the quintessential samurai of his era—self-assured, harsh, and unyielding. In his youth, he served in the palace guard and repeatedly proved his bravery while suppressing unrest. Thanks to these achievements, Masakado sought the post of chief of the capital’s military-police office (the kebiishi-chō), but he was rejected: by that time, nearly all court positions—now little more than privileged sinecures—were controlled by members of the powerful Fujiwara clan.
-
Sakakibara Yasumasa
Yasumasa was the second son of Sakakibara Nagamasa and was born in Ueno in Mikawa Province. From a young age, he began serving Tokugawa Ieyasu and eventually rose to the position of one of his most trusted generals. His wife was the daughter of Osuga Yasutaka. Ieyasu first noticed the young Yasumasa during the suppression of the Ikkō-ikki uprising in Mikawa in 1564. Thanks to his demonstrated abilities, Yasumasa was granted the privilege of using the character “yasu”—the second character of Ieyasu’s own name—in his own. Although he was the second child in his family, he became his father’s heir, though the exact reasons for this remain unknown.
-
Sakai Tadatsugu
Tadatsugu was one of the most renowned generals serving Tokugawa Ieyasu. After Ieyasu broke ties with the Imagawa clan, Tadatsugu—an ardent supporter of this decision—was granted command of Yoshida Castle in 1565, which controlled the coastal road from Tōtomi to Mikawa. During the Battle of Mikatagahara in 1573, he held the right flank of the Tokugawa forces even when the troops sent by Oda fled under the assault of the Takeda army. In the Battle of Nagashino in 1575, he personally requested permission to carry out a night attack on the Takeda camp, which he executed brilliantly together with Kanamori Nagachika.
-
Ryuzoji Takanobu
Takanobu was the eldest son of Ryūzōji Takaie and the great-grandson of Ryūzōji Iekane. His father was killed by a man named Baba Yoritiku in 1544. At a young age, Takanobu took Buddhist vows and received the monastic name Engetsu. However, around the age of eighteen, he returned to secular life, and in 1548, after the death of Ryūzōji Tanehide, he became the head of both branches of the Ryūzōji family.
-
Ouchi Yoshihiro
Ōuchi Yoshihiro was the second son of Ōuchi Hiroyo, who headed the Ōuchi clan in the western part of Honshu. In 1363, Shogun Ashikaga Yoshimitsu confirmed the Ōuchi family in the position of shugo of Suō and Nagato Provinces. In his youth, Yoshihiro assisted his father in strengthening the influence of the Northern Court on the island of Kyushu — they served under Imagawa Ryōsun, who had been tasked with subjugating the nine provinces of Kyushu.
-
Ouchi Yoshioki
Ouchi Yoshioki, the ruler of the provinces of Suo, Nagato, and Iwami, was one of the most capable military commanders and politicians of the late 15th and early 16th centuries. The son of Ouchi Masahiro, he governed from his residence in Yamaguchi in the province of Suo. In 1499, Yoshioki gave refuge to Shogun Ashikaga Yoshitane, who had been driven out of Kyoto by Hosokawa Masamoto. Shogun Yoshizumi, Masamoto’s protégé, ordered the lords of Kyushu to unite their forces against Yoshioki; however, they did not dare to do so, fearing the power of a man who by that time controlled six provinces. Having gathered a substantial army, Yoshioki marched from his native Suo toward Kyoto in order to restore Shogun Yoshitane to power.
-
Otomo Sorin
Ōtomo Yoshishige came from a noble lineage, being the eldest son of Ōtomo Yoshiaki, the ruler of Funai Province. The roots of the Ōtomo family traced back to Fujiwara Hidesato, the adopted son of Nakahara Chikayoshi. Fujiwara served Minamoto Yoritomo during the Genpei War and took part in battles in Mutsu Province in 1189. In 1193, he was appointed shugo of Buzen and Bungo Provinces, after which he adopted a new surname—Ōtomo.
