(Would you readers be so kind as to come in and give this a try? Don't pay too much attention to the first few chapters. You can skip around too, QAQ.)
The Wright family is nearly wiped out defending the kingdom. Three-year-old Noah's parents both die in battle, but when the defense ends, the dawn of hope never comes. Instead, political power struggles take its place.
The royal army has suffered heavy casualties, while the various nobles still have considerable resources. Everyone eyes the throne greedily.
The old king is gravely wounded and knows he doesn't have long to live. He also understands that the end of the war is merely the beginning of another. Feeling indebted and grateful to the Wright family, he rewards Noah's service in protecting the kingdom by granting him a lord's title and assigning him land on the border of the war zone, keeping him away from the empire's upheaval so his bloodline can survive.
Noah, who transmigrated into the body of a three-year-old and has a Lord System: So you mean my family is down on its luck, I'm an orphan, and I've been banished to the frontier?
(The story mainly focuses on what happens afterward, with an emphasis on everyday life.)