The Nameless Knight is but a clone among thousands of Knights sent to free the princess from the Demon Lord, After he's slain the Demon Lord they promised him a name but reluctantly refused to give him one as he point his sword towards the Princess.. He is very close to the princess as she's the only person to brighten his dark grey vision of the world  with color, and his feelings for her  goes onto an almost borderline obsession feeling to her.