I’ll Turn That Savage Slave Into My Obedient Emperor

Read manga I’ll Turn That Savage Slave Into My Obedient Emperor / 野蛮な奴隷を忠犬皇帝にしてみせます
A modern-day idol fan is suddenly reborn as a noblewoman in her favorite fantasy game one destined to die with a 99.9% chance. To change her fate, she must raise a former slave and low-ranking knight to the throne. Armed with her real-world skills, she takes on the challenge, but as he climbs toward power, his devotion to her begins to cross the line between loyalty and obsession.