A narrative set in the mid-1800s concerning a young physician trained in Western medicine and a young samurai striving to uphold the traditional customs of his class and culture. The plot is grounded in actual historical figures; the doctor, Ryo-an, was Tezuka's great-grandfather. In the Second Year of Ansei (1855), two young men reside in Edo's Koishigawa district: Manjiro Ibutani and Ryoan Tezuka. Ibutani is a low-ranking samurai, a talented swordsman with a direct and robust sense of justice. Tezuka possesses a more relaxed demeanor. He is attracted to women, yet he is deeply committed to pursuing a career in medicine. These two contrasting characters mature against the backdrop of the chaotic conclusion of the Tokugawa Period (1600-1868 CE).