Start Riding and Killing from the Noble Son

[Medieval background + cold weapon war + low martial arts and micro-demon] Ringer was playing games on a rainy day when he was struck by a sudden lightning strike. When he woke up again, he became the son of a knight named Green. Nobles are strife, neighbors are at war, and the ruined territory is in deadlock both inside and outside. This is the worst of times and the best of times. Green used himself as a sharp edge and found a way to build a family through war.