Yorda is one of the autonomous characters in games that we find most inspiring for Drama Princess. The reason for this is that, although she does not possess very elaborate artificial intelligence, she has a major dramatic impact on the experience of the player. She feels very much alive and you feel affection for her.
In terms of technology, the character of “frail princess” that she plays, maybe be a way of cheating oneself out of developing a complex A.I. system. So the question remains as to whether this approach can be applied to characters with different personalities.
Still, being able to hold hands with a virtual character is simply one of the most moving things I have ever done in a game.