Ryuurouden: Ouha Rikkoku-hen chapter 73 continues the ongoing historical fantasy series by Yoshito Yamahara, focusing on high-stakes battles in the Monthly Shōnen Magazine serialization. As of late 2024/early 2025, the raw chapter is available, with the story deep into the "Ouha Rikkoku" (The Great King's State-Building) arc. You can look for the raw chapter at your preferred manga hosting site.