Lord: I Raised a Slave Girl on the Gray Mist Border

[Farming + Western Fantasy + Lord + Multiple Women + Training] Ryan traveled through time. Beginning to become the last heir to the abandoned border castle. His father died in the war, the family went bankrupt and was riddled with debts. All that was left in the territory was a leaky castle, a dry well, and a fire tower that was about to go out. To make matters worse, in a few days, a wave of gray mist will come to swallow up the living. Everyone was waiting to see him die. Fortunately, at this time, he awakened the "Sacred Scripture of the Protector". As long as you contract slave girls and train them to grow, you can get rewards. Fire crystals, arrow tower blueprints, pure land fields, medical techniques, military training methods, city planning, new code... So, Ryan spent the last five fire crystals and bought an unwanted girl in the bond market. Everyone said she was thin, timid, and worthless. But Ryan saw the hidden entry on her body: [Speed Scholar], [Fire Affinity], [First Fire Residual Blood]! From this moment on, the first ray of new fire ignited in the ruined fort.