Glory for Knights
Our protagonist has just reached the age necesary to be knighred by the lord who educates him and who serves in this castle.
You will have to show him your qualities on the battlefield and in your day to day life as his vassal. Until you get enought prestige and money to manage your own lands and your own servants.
Who knows if one day you will be his heir you will have to face his enemies or, we hope not so…
You should kill him as a result of his cruelty.