Honzuki no Gekokujou: Shisho ni Naru Tame ni wa Shudan wo Erandeiraremasen - Ryoushu no Youjo

After her power and position place her lower-city family in danger, Myne is forced to leave behind her old name and enter noble society as Rozemyne, the daughter of the high-ranking noble Karstedt. If she survives the strict education and baptism ahead of her, she will become the archduke's adopted daughter, gaining protection at the cost of separation from the family that defined her life.

Noble society follows rules completely unlike those she learned among merchants and craftsmen. Every word carries political weight and every gesture is watched, yet her deepest desire has not changed: books. Rozemyne uses her new influence to protect the people she loves and expand bookmaking, learning how to live under a new identity without abandoning the Myne still inside her.