The Reformation of the World as Overseen by a Realist Demon King, Vol. 8 (manga)

After successfully taking down the fourth Demon King to stand against him, Astaroth sets out with Eve and Jeanne in search of coffee beans. But his leisurely trip turns into a new quest when he meets Ryoma, a half-elf woman who begs him to help save her father—the famous samurai Sakamoto Ryouma!