There is an Anxiety called Eyes of Many where your character is worried about others judging them, watching them and so forth. That might work well with your notion of the character feeling embarrassed or perhaps feeling like they don't fit into samurai society. Maybe thinking any moment a person will come out and point out that they are a fraud or that their family is a fraud.<br/><br/>As for the Blackmail, I can see it but at the same time your character is a member of samurai caste and was legitimately made one. Revealing such a secret would do more to embarrass the Yasuki and call into question their practices of establishing samurai, which would really bring more pain on the holder of the secret. If you want to sort of draw that out more or maybe reveal something more than maybe, but really the Blackmail thing should be a bit more personal. You could also look at the disadvantage Adopted Peasant which may give you that same feel you are looking for with the character.